In baseball statistics, the term times on base, also abbreviated as TOB, is the cumulative total number of times a batter has reached base as a result of hits, walks and hit by pitches. This statistic does not include times reaching first by way of error, dropped third strike, fielder's obstruction or a fielder's choice, making this statistic somewhat of a misnomer. TOB is used in the official statistic on-base percentage, which is the ratio of TOB to AB+SF+BB+HBP (this is occasionally erroneously simplified to number of total plate appearances, which includes uncommon situations that do not affect one's on-base percentage, such as a sacrifice bunt).

Times on base leaders in Major League Baseball

Career (as of the end of the 2017 season)

1. Pete Rose – 5929
2. Barry Bonds – 5599
3. Ty Cobb – 5532
4. Rickey Henderson – 5343
5. Carl Yastrzemski – 5304
6. Stan Musial – 5282
7. Hank Aaron – 5205
8. Tris Speaker – 4998
9. Babe Ruth – 4978
10. Eddie Collins – 4891

Single-season

1. Babe Ruth, Yankees (1923) – 379
2. Barry Bonds, Giants (2004) – 376
3. Ted Williams, Red Sox (1949) – 358
4. Barry Bonds, Giants (2002) – 356
5. Billy Hamilton, Phillies (1894) – 355
6. Babe Ruth, Yankees (1921) – 353
7. Babe Ruth, Yankees (1924) – 346
8. Ted Williams, Red Sox (1947) – 345
9. Lou Gehrig, Yankees (1936) -342
10. Wade Boggs, Red Sox (1988) – 342
11. Barry Bonds, Giants (2001) – 342

Single game

Three players have had 9 TOB in a single game:^[1]

• Max Carey, July 7, 1922
• Johnny Burnett, July 10, 1932
• Stan Hack, August 9, 1942