Lazzarini began his Grand Prix career in 1969 in the 250 class on a Benelli. He won his first Grand Prix at the 1973 Dutch TT on a Maico. He captured the FIM 1978 125cc world championship riding an MBA. He followed that up with two 50cc world championships in 1979 and 1980 riding a Kreidler. His riding career spanned 15 seasons.^[1]

Complete Grand Prix motorcycle racing results

Points system from 1969 onwards:

Position	1	2	3	4	5	6	7	8	9	10
Points	15	12	10	8	6	5	4	3	2	1

(key) (Races in bold indicate pole position; races in italics indicate fastest lap)

Year	Class	Bike	1	2	3	4	5	6	7	8	9	10	11	12	13	14	Points	Rank	Wins
1969	50cc	Derbi	ESP -	GER -	FRA -		NED 10	BEL -	DDR 6	CZE -		ULS -	NAT -	YUG -			6	21st	0
1969	250cc	Benelli	ESP -	GER -	FRA 7	IOM -	NED -	BEL -	DDR -	CZE -	FIN -	ULS -	NAT -	YUG -			4	33rd	0
1970	50cc	Morbidelli	GER 5	FRA 8	YUG -		NED -	BEL -	DDR -	CZE -		ULS -	NAT -	ESP -			9	12th	0
1970	125cc	Morbidelli	GER -	FRA 6	YUG -	IOM -	NED -	BEL -	DDR -	CZE -	FIN -		NAT -	ESP -			5	31st	0
1971	125cc	Maico	AUT -	GER -	IOM -	NED -	BEL 9	DDR -	CZE -	SWE -	FIN -	NAT 10	ESP -				3	32nd	0
1972	125cc	Maico	GER -	FRA -	AUT 6	NAT 5	IOM -	YUG 4	NED -	BEL 8	DDR -	CZE -	SWE -	FIN -	ESP -		22	11th	0
1973	125cc	Piovaticci	FRA 4			NAT 3	IOM -	YUG 4						ESP 4			59	5th	1
1973	125cc	Maico		AUT 5	GER -				NED 1	BEL -	CZE 7	SWE 8	FIN -				59	5th	1
1974	125cc	Piovaticci	FRA -	GER -	AUT -	NAT 7	NED -	BEL 6	SWE -	CZE -	YUG -	ESP -					9	20th	0
1975	50cc	Piovaticci		ESP 4		GER 2	NAT 2	NED 3	BEL 3	SWE 1	FIN 2		YUG -				61	2nd	1
1975	125cc	Piovaticci	FRA 4	ESP 8	AUT -	GER 10	NAT 8	NED -	BEL 5	SWE 3		CZE 3	YUG 3				47	5th	0
1976	50cc	Morbidelli	FRA 8		NAT 2	YUG -	NED 4	BEL 4	SWE 3	FIN 3	GER -	ESP 3					53	4th	0
1976	125cc	Morbidelli		AUT -	NAT 5	YUG 8	NED 8	BEL 3	SWE 2	FIN 10	GER -	ESP 8					26	7th	0
1977	50cc	Kreidler			GER 2	NAT 1	ESP 2		YUG -	NED 4	BEL 1	SWE 3					72	2nd	2
1977	125cc	Morbidelli	VEN -	AUT 1	GER 2	NAT 2	ESP 2	FRA 2	YUG -	NED -	BEL 4	SWE 3	FIN 2	GBR 2			105	2nd	1
1978	50cc	Kreidler		ESP 1			NAT -	NED 1	BEL 2				GER 3	CZE -	YUG 2		64	2nd	2
1978	125cc	MBA	VEN 2	ESP 1	AUT 1	FRA 2	NAT 1	NED 1	BEL 6	SWE -	FIN 2	GBR 3	GER 8		YUG -		114	1st	4
1979	50cc	Kreidler			GER -	NAT 1	ESP 1	YUG 1	NED 1	BEL -					FRA 1		75	1st	5
1979	125cc	MBA	VEN -	AUT 5	GER 6	NAT 6	ESP -	YUG -	NED -	BEL -	SWE 5	FIN -	GBR -	CZE -	FRA -		22	15th	0
1980	50cc	Iprem	NAT 1	ESP 1		YUG 3	NED 3	BEL 2				GER 2					74	1st	2
1980	125cc	MBA	NAT -	ESP -	FRA 9	YUG -	NED -	BEL -	FIN -	GBR 5	CZE -	GER -					8	17th	0
1981	125cc	Iprem	ARG -	AUT 4	GER -	NAT -	FRA -	ESP -	YUG -	NED -	RSM -	GBR -	FIN -	SWE -	CZE -		8	18th	0
1982	50cc	Garelli				ESP 2	NAT 2	NED -		YUG 1					RSM 1	GER 1	69	2nd	3
1982	125cc	Garelli	ARG 8	AUT -	FRA -	ESP 2	NAT -	NED 2	BEL 2	YUG 1	GBR 4	SWE 2	FIN 5	CZE 1			95	2nd	2
1983	50cc	Garelli	FRA 2	NAT 1	GER 2	ESP 1		YUG 1	NED -				RSM -				69	2nd	3
1983	125cc	Garelli	FRA NC	NAT 2	GER 2	ESP 2	AUT 2	YUG -	NED 7	BEL 1	GBR -	SWE -	RSM -				67	3rd	1
1984	125cc	Garelli	NAT 3	ESP 2	GER 3	FRA 2	NED 2	GBR NC	SWE 3	RSM 2							78	2nd	0