1973 On Base Percentage Leaders Top 25 in the American League
Name	On Base Percentage	Team	Rank
John Mayberry	.417 (.41693)	Kansas City Royals	1
Rod Carew	.411 (.41077)	Minnesota Twins	2
Carl Yastrzemski	.407 (.40707)	Boston Red Sox	3
Gene Tenace	.387 (.38694)	Oakland Athletics	4
Reggie Jackson	.383 (.38315)	Oakland Athletics	5
Billy North	.376 (.37638)	Oakland Athletics	6
Sal Bando	.375 (.37482)	Oakland Athletics	7
Bobby Grich	.373 (.37303)	Baltimore Orioles	8
Frank Robinson	.372 (.37202)	California Angels	9
George Scott	.370 (.36960)	Milwaukee Brewers	10
Amos Otis	.368 (.36769)	Kansas City Royals	11
Bill Melton	.363 (.36250)	Chicago White Sox	12
Thurman Munson	.362 (.36174)	New York Yankees	13
Johnny Briggs	.361 (.36097)	Milwaukee Brewers	14
Bobby Murcer	.357 (.35714)	New York Yankees	15
Jeff Burroughs	.355 (.35537)	Texas Rangers	16
Pat Kelly	.355 (.35531)	Chicago White Sox	17
Dave May	.352 (.35155)	Milwaukee Brewers	18
Tommy Harper	.351 (.35135)	Boston Red Sox	19
Larry Hisle	.351 (.35065)	Minnesota Twins	20
Orlando Cepeda	.350 (.34983)	Boston Red Sox	21
Don Money	.347 (.34740)	Milwaukee Brewers	22
Tony Oliva	.345 (.34455)	Minnesota Twins	23
Chris Chambliss	.342 (.34173)	Cleveland Indians	24
Tommy Davis	.341 (.34072)	Baltimore Orioles	25
Name	On Base Percentage	Team	Rank

	Jose Cruz of the Houston Astros had his number twenty-five retired on October 3, 1992, and became the first Major League player with that particular retired number. The first player from the Angels franchise (they were the California Angels at the time) to wear the number twenty-five was Bob Perry. Jim Thome wore number twenty-five since he first came up with the Cleveland Indians making him the franchise record holder for that particular number (Mike Garcia is second).