1981 Winning Percentage Leaders Top 25 in the American League
Name	Winning Percentage	Team	Rank
Pete Vuckovich	.778 (.77778)	Milwaukee Brewers	1
Mike Torrez	.769 (.76923)	Boston Red Sox	2
Dennis Martinez	.737 (.73684)	Baltimore Orioles	3
Scott McGregor	.722 (.72222)	Baltimore Orioles	4
Ron Guidry	.688 (.68750)	New York Yankees	5
Steve McCatty	.667 (.66667)	Oakland Athletics	6
Jack Morris	.667 (.66667)	Detroit Tigers
Steve Renko	.667 (.66667)	California Angels
Dave Righetti	.667 (.66667)	New York Yankees
Rick Honeycutt	.647 (.64706)	Texas Rangers	10
Britt Burns	.625 (.62500)	Chicago White Sox	11
John Denny	.625 (.62500)	Cleveland Indians
Matt Keough	.625 (.62500)	Oakland Athletics
Doc Medich	.625 (.62500)	Texas Rangers
Bert Blyleven	.611 (.61111)	Cleveland Indians	15
Ken Forsch	.611 (.61111)	California Angels
Moose Haas	.611 (.61111)	Milwaukee Brewers
Mike Flanagan	.600 (.60000)	Baltimore Orioles	18
Larry Gura	.579 (.57895)	Kansas City Royals	19
Mike Norris	.571 (.57143)	Oakland Athletics	20
Milt Wilcox	.571 (.57143)	Detroit Tigers
Mike Caldwell	.550 (.55000)	Milwaukee Brewers	22
Rick Langford	.545 (.54545)	Oakland Athletics	23
Dennis Leonard	.542 (.54167)	Kansas City Royals	24
Dennis Lamp	.538 (.53846)	Chicago White Sox	25
Name	Winning 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).