The ATP Challenger Series is the second tier tour for professional tennis organised by the Association of Tennis Professionals (ATP). The 2007 ATP Challenger Series calendar comprised 174 tournaments, with prize money ranging from $25,000 up to $150,000.^[1][2]

Schedule

January

Date	Country	Tournament	Prizemoney	Surface	Singles champion	Doubles champions
01.01.	Brazil	São Paulo Challenger	$ 100,000	Hard	Guillermo Cañas	Pablo Cuevas Adrián García
	New Caledonia	Nouméa Challenger	$ 075,000	Hard	Michael Russell	Alex Kuznetsov Phillip Simmonds
15.01.	Chile	La Serena Challenger	$ 050,000	Clay	Mariano Zabaleta	Marc López Simone Vagnozzi
22.01.	South Africa	Durban Challenger	$ 125,000	Hard	Mathieu Montcourt	Rik de Voest Dominik Meffert
	Germany	Heilbronn Open	$ 100,000	Hard (i)	Michael Berrer	Michael Kohlmann Rainer Schüttler
	United States	Hilton Waikoloa Village USTA Challenger	$ 050,000	Hard	Michael Russell	Brendan Evans Scott Oudsema
	Chile	Santiago de Chile Challenger	$ 025,000	Clay	Martín Vassallo Argüello	Brian Dabul Marc López
	Great Britain	Wrexham Challenger	$ 025,000	Hard (i)	Michał Przysiężny	Thomas Oger Nicolas Tourte

February

Date	Country	Tournament	Prizemoney	Surface	Singles champion	Doubles champions
05.02.	Poland	Wroclaw Challenger	$ 125,000	Hard (i)	Werner Eschauer	Lukáš Rosol Jan Vacek
	Italy	Bergamo Challenger	$ 100,000	Carpet (i)	Fabrice Santoro	Jérôme Haehnel Jean-René Lisnard
	United States	Challenger of Dallas	$ 050,000	Hard (i)	Robert Kendrick	Eric Butorac Jamie Murray
	Brazil	Florianópolis Challenger I	$ 035,000	Clay	Óscar Hernández	Márcio Carlsson Lucas Engel
	Australia	Burnie Challenger I	$ 025,000	Hard	Nathan Healey	Nathan Healey Robert Smeets
12.02.	United States	Joplin Challenger	$ 050,000	Hard (i)	Michael Russell	Patrick Briaud Donald Young
19.02.	France	Besançon Challenger	$ 100,000	Hard (i)	Ernests Gulbis	Christopher Kas Alexander Peya
26.02.	France	Cherbourg Challenger	$ 050,000	Hard (i)	Federico Luzzi	Michal Mertiňák Robin Vik
	Germany	Volkswagen Challenger	$ 025,000	Carpet (i)	Robin Haase	Alexander Peya Lars Uebel

March

Date	Country	Tournament	Prizemoney	Surface	Singles champion	Doubles champions
05.03.	Japan	Kyōto Challenger	$ 025,000	Carpet v(i)	Takao Suzuki	Sanchai Ratiwatana Sonchat Ratiwatana
	Ecuador	Salinas Challenger	$ 025,000	Hard	Juan Pablo Brzezicki	Scott Lipsky David Martin
12.03.	Colombia	Bogotá Challenger I	$ 125,000	Clay	Santiago Giraldo	Martín García Diego Hartfield
	United States	Sunrise Challenger	$ 100,000	Hard	Gaël Monfils	Konstantinos Economidis Kristof Vliegen
	Vietnam	Samsung Challenger	$ 050,000	Hard	Pavel Šnobel	Yu Xinyuan Zeng Shaoxuan
	Bosnia and Herzegovina	Sarajevo Challenger	$ 025,000	Hard (i)	Ernests Gulbis	Ernests Gulbis Deniss Pavlovs
19.03.	Morocco	Rabat Challenger	$ 035,000	Clay	Stefano Galvani	Yuri Schukin Orest Tereshchuk
	Italy	Barletta Challenger	$ 025,000	Clay	Carlos Berlocq	David Marrero Albert Portas
26.03.	Mexico	Mexiko-Stadt Challenger	$ 125,000	Clay	Ramón Delgado	' Brazil Marcelo Melo  Argentina Horacio Zeballos
	Italy	Neapel Challenger	$ 100,000	Clay	Potito Starace	Flavio Cipolla Marcel Granollers
	Morocco	Fès Challenger	$ 035,000	Clay	Peter Luczak	Sergiy Stakhovsky Orest Tereshchuk
	France	Saint-Brieuc Challenger	$ 025,000	Clay(i)	Kristian Pless	Jean-Baptiste Perlant Xavier Pujo

April

Date	Country	Tournament	Prizemoney	Surface	Singles champion	Doubles champions
02.04.	Mexico	San Luis Potosí Challenger	$ 050,000	Clay	Fernando Vicente	Jérémy Chardy Marcelo Melo
	United States	Tallahassee Challenger	$ 050,000	Hard	Jo-Wilfried Tsonga	Izak van der Merwe Wesley Whitehouse
	Italy	Monza Challenger	$ 025,000	Clay	Werner Eschauer	Nathan Healey Jordan Kerr
09.04.	Morocco	Casablanca Challenger	$ 075,000	Clay	Marin Čilić	Łukasz Kubot Oliver Marach
	United States	Santa Clarita Challenger	$ 050,000	Hard	Alex Bogdanovic	Harel Levy Sam Warburg
	Switzerland	Chiasso Challenger	$ 025,000	Clay	Werner Eschauer	Bart Beks Matwé Middelkoop
	Mexico	Mexiko-Stadt Challenger	$ 025,000	Hard	Ramón Delgado	Marcelo Melo Horacio Zeballos
16.04.	Bermuda	Bermuda Challenger	$ 100,000	Clay	Mariano Zabaleta	Marcelo Melo André Sá
	Morocco	Marrakesch Challenger	$ 100,000	Clay	Younes El Aynaoui	Tomáš Cibulec Jordan Kerr
	Great Britain	Cardiff Challenger	$ 025,000	Hard (i)	Frédéric Niemeyer	Pavel Šnobel Jan Vacek
23.04.	Brazil	Florianópolis Challenger II	$ 050,000	Clay	Paul Capdeville	Pablo Cuevas Horacio Zeballos
30.04.	Tunisia	Tunis Open	$ 125,000	Clay	Simone Bolelli	Łukasz Kubot Oliver Marach
	Spain	Lanzarote Challenger	$ 050,000	Hard	Jo-Wilfried Tsonga	Luke Bourgeois Rik de Voest
	United States	Naples Challenger	$ 050,000	Clay	Bobby Reynolds	Juan Pablo Brzezicki Leonardo Mayer
	Czech Republic	Ostrava Challenger	$ 050,000	Clay	Bohdan Ulihrach	Bastian Knittel Lukáš Rosol
	Italy	Rom Challenger	$ 025,000	Clay	Thierry Ascione	Flavio Cipolla Marcel Granollers

May

Date	Country	Tournament	Prizemoney	Surface	Singles champion	Doubles champions
07.05.	Czech Republic	Prague Challenger	$ 100,000	Clay	Dušan Lojda	Tomáš Cibulec Jordan Kerr
	Germany	Ostdeutscher Sparkassen Cup	$ 050,000	Clay	Yuri Schukin	Tomas Behrend Christopher Kas
	United States	Tunica Resorts Challenger	$ 050,000	Clay (i)	Pablo Cuevas	Paul Goldstein Donald Young
	Croatia	Rijeka Challenger	$ 035,000	Clay	Marin Čilić	Jérôme Haehnel Jean-René Lisnard
	Spain	Maspalomas Challenger	$ 025,000	Clay	Peter Luczak	Marcel Granollers Marc López
14.05.	United States	Forest Hills Challenger	$ 050,000	Clay	Paul Goldstein	Rajeev Ram Bobby Reynolds
	Croatia	Zagreb Challenger	$ 050,000	Clay	Janko Tipsarević	Tomas Behrend André Ghem
	Italy	Sanremo Challenger	$ 025,000	Clay	Francesco Aldi	Sanchai Ratiwatana Sonchat Ratiwatana
21.05.	Uzbekistan	Fergana Challenger	$ 035,000	Hard	Antony Dupuis	Daniel Brands John Paul Fruttero
28.05.	South Korea	Busan Challenger	$ 075,000	Hard	Jimmy Wang	Sergei Bubka John Paul Fruttero
	United States	Carson Challenger	$ 050,000	Hard	Alex Bogomolov Jr.	Bobby Reynolds Rajeev Ram
	Germany	Karlsruhe Challenger	$ 025,000	Clay	Mischa Zverev	Alex Kuznetsov Mischa Zverev

June

Date	Country	Tournament	Prizemoney	Surface	Singles champion	Doubles champions
04.06.	Czech Republic	Prostějov Challenger	$ 150,000	Clay	Sergio Roitman	Ramón Delgado Juan Pablo Guzmán
	Germany	Schickedanz Open	$ 050,000	Clay	Peter Luczak	Bruno Echagaray André Ghem
	Great Britain	Surbiton Challenger	$ 050,000	Grass	Jo-Wilfried Tsonga	Alex Kuznetsov Mischa Zverev
	United States	Yuba City Challenger	$ 050,000	Hard	Kevin Kim	Harel Levy Sam Warburg
	Italy	Sassuolo Challenger	$ 025,000	Clay	Alexandr Dolgopolov	Giorgio Galimberti Márcio Torres
11.06.	Switzerland	Lugano Challenger	$ 100,000	Clay	Werner Eschauer	Sanchai Ratiwatana Sonchat Ratiwatana
	Kazakhstan	Astana Challenger	$ 075,000	Hard	Mikhail Ledovskikh	Daniel Brands Adam Feeney
	Poland	Bytom Challenger	$ 035,000	Clay	Peter Luczak	Hugo Armando Brian Dabul
	Slovakia	Košice Challenger	$ 025,000	Clay	Jérémy Chardy	Filip Polášek Lukáš Rosol
18.06.	Germany	Nord/LB Open	$ 125,000	Clay	Óscar Hernández	Tomas Behrend Christopher Kas
	Kazakhstan	Almaty Challenger I	$ 035,000	Clay	Simon Greul	Kamil Čapkovič Ivan Dodig
	Italy	Mailand Challenger	$ 025,000	Clay	Santiago Ventura	Fabio Colangelo Martín Vilarrubí
25.06.	Kazakhstan	Almaty Challenger II	$ 035,000	Clay	Simon Greul	Teodor-Dacian Crăciun Florin Mergea
	Italy	Reggio nell’Emilia Challenger	$ 035,000	Clay	Olivier Patience	Franco Ferreiro Lamine Ouahab
	Romania	Constanța Challenger	$ 025,000	Clay	Sebastián Decoud	Marc Fornell Mestres Gabriel Trujillo Soler

July

Date	Country	Tournament	Prizemoney	Surface	Singles champion	Doubles champions
02.07.	Spain	Córdoba Challenger	$ 125,000	Hard	Adrián Menéndez	Santiago Ventura Fernando Vicente
	Italy	Turin Challenger	$ 100,000	Clay	Carlos Berlocq	Pablo Cuevas Horacio Zeballos
	Ireland	Dublin Challenger	$ 050,000	Carpet	Rohan Bopanna	Rohan Bopanna Adam Feeney
	United States	Winnetka Challenger	$ 050,000	Hard	Noam Okun	Patrick Briaud Chris Drake
	France	Montauban Challenger	$ 025,000	Clay	Michael Lammer	Marc Fornell Mestres Gabriel Trujillo Soler
09.07.	Netherlands	Scheveningen Challenger	$ 100,000	Clay	Pablo Cuevas	Raemon Sluiter Peter Wessels
	Colombia	Bogotá Challenger II	$ 050,000	Clay	Carlos Salamanca	Brian Dabul Santiago González
	Italy	Mantua Challenger	$ 050,000	Clay	Alessio di Mauro	Andrey Golubev Francesco Piccari
	Germany	Oberstaufen Cup	$ 025,000	Clay	Gabriel Trujillo Soler	Filip Polášek Igor Zelenay
16.07.	United States	Aptos Challenger	$ 075,000	Hard	Donald Young	Rajeev Ram Bobby Reynolds
	Italy	Rimini Challenger	$ 050,000	Clay	Oliver Marach	Carles Poch Gradin Santiago Ventura
	Spain	Cuenca Challenger	$ 025,000	Clay	Leonardo Mayer	Bruno Soares Márcio Torres
	Great Britain	Manchester Challenger	$ 025,000	Grass	Harel Levy	Rohan Bopanna Aisam-ul-Haq Qureshi
	Russia	Togliatti Cup	$ 025,000	Hard	Dudi Sela	Johan Brunström Mohammad Ghareeb
23.07.	Poland	Posen Challenger	$ 100,000	Clay	Raemon Sluiter	Marc López Santiago Ventura
	Canada	Granby Challenger	$ 050,000	Hard	Takao Suzuki	Sanchai Ratiwatana Sonchat Ratiwatana
	United States	Lexington Challenger	$ 050,000	Hard	John Isner	Brendan Evans Ryan Sweeting
	Russia	Pensa Challenger	$ 050,000	Hard	Benedikt Dorsch	Alexandre Krasnoroutskiy Alexander Kudryavtsev
	Great Britain	Nottingham Challenger	$ 025,000	Grass	Alun Jones	Rohan Bopanna Aisam-ul-Haq Qureshi
	Italy	Recanati Challenger	$ 025,000	Hard	Jimmy Wang	Fabio Colangelo Sergiy Stakhovsky
30.07.	Spain	Segovia Challenger	$ 125,000	Hard	Fernando Verdasco	Rohan Bopanna Aisam-ul-Haq Qureshi
	Canada	Vancouver Challenger	$ 100,000	Hard	Frédéric Niemeyer	Rik de Voest Ashley Fisher
	Finland	Tampere Challenger	$ 050,000	Clay	Éric Prodon	Johan Brunström Mohammad Ghareeb
	Italy	Trani Challenger	$ 050,000	Clay	Flavio Cipolla	Leonardo Azzaro Daniele Giorgini
	Romania	Timișoara Challenger	$ 035,000	Clay	Victor Hănescu	Marcel Granollers Santiago Ventura
	Brazil	Belo Horizonte Challenger	$ 025,000	Hard	Brian Dabul	Santiago González Bruno Soares
	Russia	Saransk Challenger	$ 025,000	Clay	Mikhail Kukushkin	Antal van der Duim Boy Westerhof

August

Date	Country	Tournament	Prizemoney	Surface	Singles champion	Doubles champions
06.08.	Turkey	Istanbul Challenger	$ 100,000	Hard	Mischa Zverev	James Auckland Ross Hutchins
	San Marino	San Marino Challenger	$ 100,000	Clay	Potito Starace	Pablo Cuevas Juan Pablo Guzmán
	United States	Levene Gouldin & Thompson Tennis Challenger	$ 050,000	Hard	Thomas Johansson	Scott Oudsema Ryan Sweeting
	Brazil	Campos do Jordão Challenger	$ 050,000	Hard	Brian Dabul	Eduardo Schwank Horacio Zeballos
	Uzbekistan	Samarkand Challenger	$ 035,000	Clay	Mikhail Kukushkin	Sergei Bubka Evgeny Kirillov
	Spain	Vigo Challenger	$ 035,000	Clay	Máximo González	Leonardo Azzaro Lamine Ouahab
13.08.	United States	Bronx Challenger	$ 050,000	Hard	Sam Warburg	Rohan Bopanna Aisam-ul-Haq Qureshi
	France	Cordenons Challenger	$ 050,000	Clay	Máximo González	Alessandro da Col Andrea Stoppini
	Uzbekistan	Bukhara Challenger	$ 035,000	Hard	Denis Istomin	Evgeny Kirillov Alexander Kudryavtsev
	Austria	Graz Challenger	$ 025,000	Clay	Victor Hănescu	Sebastián Decoud Yuri Schukin
	Ecuador	Manta Challenger	$ 025,000	Hard	Go Soeda	Eduardo Schwank Horacio Zeballos
20.08.	Italy	Manerbio Challenger	$ 050,000	Clay	Jiří Vaněk	Antal van der Duim Boy Westerhof
	Switzerland	Genf Challenger	$ 035,000	Clay	Yuri Schukin	Sebastián Decoud Yuri Schukin
	Uzbekistan	Qarshi Challenger	$ 035,000	Hard	Denis Istomin	Andrew Coelho Adam Feeney
27.08.	Ukraine	Tscherkassy Challenger	$ 050,000	Clay	Boris Pašanski	Daniel Muñoz de la Nava Santiago Ventura
	Italy	Como Challenger	$ 050,000	Clay	Máximo González	Máximo González Simone Vagnozzi
	Germany	Black Forest Open	$ 025,000	Clay	Ivo Minář	Marc López Martín Vilarrubí

September

Date	Country	Tournament	Prizemoney	Surface	Singles champion	Doubles champions
03.09.	Netherlands	Alphen aan den Rijn Challenger	$ 050,000	Clay	Jesse Huta Galung	Leonardo Azzaro Lovro Zovko
	Ukraine	Donezk Challenger	$ 050,000	Hard	Roko Karanušić	Philipp Petzschner Simon Stadler
	Romania	Brașov Challenger	$ 025,000	Clay	Máximo González	Florin Mergea Horia Tecău
	Germany	Düsseldorf Open Challenger	$ 025,000	Clay	Denis Gremelmayr	Fabio Colangelo Philipp Marx
	Italy	Genua Challenger	$ 025,000	Clay	Flavio Cipolla	Daniele Giorgini Simone Vagnozzi
10.09.	France	Orléans Challenger	$ 100,000	Hard (i)	Olivier Rochus	James Cerretani Frank Moser
	Slovenia	Ljubljana Challenger	$ 050,000	Clay	Marco Mirnegg	Alexander Kudryavtsev Alexandre Krasnoroutskiy
	United States	New Orleans Challenger	$ 050,000	Hard	Kevin Anderson	Kevin Anderson Ryler DeHeart
	Spain	Sevilla Challenger	$ 050,000	Clay	Frederico Gil	Marcel Granollers Santiago Ventura
	Italy	Todi Challenger	$ 035,000	Clay	Stefano Galvani	Daniele Giorgini Alessandro Motti
17.09.	Poland	Stettin Challenger	$ 125,000	Clay	Sergio Roitman	Tomas Behrend Christopher Kas
	United States	Lubbock Challenger	$ 050,000	Hard	Robert Smeets	Alex Kuznetsov Ryan Sweeting
	Bosnia and Herzegovina	Banja Luka Challenger	$ 025,000	Clay	Konstantinos Economidis	Alexandre Krasnoroutskiy Alexander Kudryavtsev
24.09.	France	Grenoble Challenger	$ 050,000	Hard (i)	Nicolás Lapentti	Jasper Smit Martijn van Haasteren
	Slovakia	Trnava Challenger	$ 050,000	Clay	Jan Hernych	Filip Polášek Igor Zelenay
	United States	Tulsa Challenger	$ 050,000	Hard	Jesse Witten	Bobby Reynolds Rajeev Ram
	Romania	Bukarest Challenger	$ 035,000	Clay	Victor Hănescu	Marcel Granollers Santiago Ventura
	Italy	Neapel Challenger	$ 035,000	Clay	Potito Starace	Flavio Cipolla Marcel Granollers

October

Date	Country	Tournament	Prizemoney	Surface	Singles champion	Doubles champions
01.10.	Belgium	Mons Challenger	$ 125,000	Hard (i)	Ernests Gulbis	Tomasz Bednarek Filip Polášek
	Spain	Tarragona Challenger	$ 050,000	Clay	Alberto Martín	Marcel Granollers Santiago Ventura
	Colombia	Medellín Challenger	$ 025,000	Clay	Eduardo Schwank	Pablo Cuevas Horacio Zeballos
08.10.	United States	Sacramento Challenger	$ 075,000	Hard	Wayne Odesnik	Robert Kendrick Brian Wilson
	France	Rennes Challenger	$ 050,000	Hard (i)	Philipp Petzschner	Philipp Petzschner Björn Phau
	Ecuador	Quito Challenger	$ 025,000	Clay	Santiago Giraldo	Brian Dabul Marcos Daniel
15.10.	France	Challenger 42	$ 125,000	Hard (i)	Thierry Ascione	Martín García Sebastián Prieto
	Colombia	Bogotá Challenger III	$ 075,000	Clay	Marcos Daniel	Thomaz Bellucci Bruno Soares
	United States	Calabasas Challenger	$ 050,000	Hard	Robert Kendrick	John Isner Brian Wilson
	Denmark	Kolding Challenger	$ 050,000	Hard (i)	Lukáš Lacko	Frederik Nielsen Rasmus Nørby
22.10.	South Korea	Seoul Challenger	$ 125,000	Hard	Dudi Sela	Rik de Voest Lu Yen-hsun
	Brazil	Belo Horizonte Challenger	$ 075,000	Clay	Brian Dabul	Santiago González Bruno Soares
	Great Britain	Tarka Challenger	$ 025,000	Hard (i)	Jérémy Chardy	Frederik Nielsen Aisam-ul-Haq Qureshi
	Canada	Rimouski Challenger	$ 025,000	Carpet (i)	Brendan Evans	Daniel King-Turner Robert Smeets
29.10.	South Korea	Busan Challenger	$ 100,000	Hard	Jimmy Wang	Sergei Bubka John Paul Fruttero
	Uruguay	Montevideo Challenger	$ 075,000	Clay	Santiago Ventura	Pablo Cuevas Luis Horna
	Germany	Lambertz Open by STAWAG	$ 050,000	Carpet (i)	Evgeny Korolev	Philipp Petzschner Alexander Peya
	United States	Louisville Challenger	$ 050,000	Hard (i)	Matthias Bachinger	John Isner Travis Parrott

November

Date	Country	Tournament	Prizemoney	Surface	Singles champion	Doubles champions
05.11.	Slovakia	Bratislava Challenger	$ 100,000	Hard (i)	Simone Bolelli	Tomáš Cibulec Jaroslav Levinský
	Paraguay	Asunción Challenger	$ 075,000	Clay	Franco Ferreiro	Carlos Berlocq Martín Vassallo Argüello
	United States	Nashville Challenger	$ 075,000	Hard (i)	Jesse Levine	Rajeev Ram Bobby Reynolds
	Ecuador	Guayaquil Challenger	$ 050,000	Clay	Nicolás Lapentti	Brian Dabul Juan Pablo Guzmán
	Tunisia	Tunis Challenger	$ 035,000	Hard	Simone Bolelli	Łukasz Kubot Oliver Marach
	Germany	Bauer Watertechnology Cup	$ 025,000	Carpet (i)	Denis Gremelmayr	Philipp Petzschner Alexander Peya
12.11.	Ukraine	Dnipro Challenger	$ 125,000	Hard (i)	Mischa Zverev	Christopher Kas Lovro Zovko
	Argentina	Buenos Aires Challenger	$ 075,000	Clay	Sergio Roitman	Marcelo Melo Sebastián Prieto
	France	Champaign Challenger	$ 050,000	Hard (i)	Jesse Levine	Harel Levy Sam Warburg
	Finland	Helsinki Challenger	$ 050,000	Hard (i)	Steve Darcis	Mikhail Elgin Alexander Kudryavtsev
	China	Kaohsiung Challenger	$ 050,000	Hard	Lu Yen-hsun	Stephen Amritraj Dudi Sela
19.11.	Malaysia	Malaysia Open	$ 150,000	Carpet (i)	Rainer Schüttler	Stephen Huss Wesley Moodie
	United States	Knoxville Challenger	$ 050,000	Hard (i)	Robert Kendrick	Harel Levy Sam Warburg
	Peru	Lima Challenger	$ 050,000	Clay	Pablo Cuevas	Pablo Cuevas Eduardo Schwank
	Japan	Yokohama Challenger	$ 035,000	Hard	Dudi Sela	Hiroki Kondo Go Soeda
	Australia	Caloundra Challenger	$ 025,000	Hard	Joseph Sirianni	Chen Ti Jun Woong-sun
	Mexico	Puebla Challenger	$ 025,000	Hard	Leonardo Mayer	Raphael Durek Dawid Olejniczak
	Great Britain	LTA Shrewsbury Challenger	$ 025,000	Hard (i)	Igor Kunitsyn	Frederik Nielsen Rasmus Nørby
26.11.	India	Neu-Delhi Challenger I	$ 050,000	Hard	Aisam-ul-Haq Qureshi	Rik de Voest Wesley Moodie
	Australia	Brisbane Challenger	$ 025,000	Hard (i)	Joseph Sirianni	Rameez Junaid Daniel King-Turner

December

Date	Country	Tournament	Prizemoney	Surface	Singles champion	Doubles champions
03.12.	India	Neu-Delhi Challenger II	$ 050,000	Hard	Mikhail Elgin	Yu Xinyuan Zeng Shaoxuan
	Australia	Burnie Challenger II	$ 035,000	Hard	Alun Jones	Sam Groth Joseph Sirianni