2003 Winning Percentage Leaders Top 25 in the American League
Name	Winning Percentage	Team	Rank
Pedro Martinez	.778 (.77778)	Boston Red Sox	1
Roy Halladay	.759 (.75862)	Toronto Blue Jays	2
Jamie Moyer	.750 (.75000)	Seattle Mariners	3
Andy Pettitte	.724 (.72414)	New York Yankees	4
Derek Lowe	.708 (.70833)	Boston Red Sox	5
Esteban Loaiza	.700 (.70000)	Chicago White Sox	6
Tim Hudson	.696 (.69565)	Oakland Athletics	7
David Wells	.682 (.68182)	New York Yankees	8
Mike Mussina	.680 (.68000)	New York Yankees	9
Roger Clemens	.654 (.65385)	New York Yankees	10
Mark Mulder	.625 (.62500)	Oakland Athletics	11
Kenny Rogers	.619 (.61905)	Minnesota Twins	12
Tim Wakefield	.611 (.61111)	Boston Red Sox	13
Joel Pineiro	.593 (.59259)	Seattle Mariners	14
Kelvim Escobar	.591 (.59091)	Toronto Blue Jays	15
C.C. Sabathia	.591 (.59091)	Cleveland Indians
Brad Radke	.583 (.58333)	Minnesota Twins	17
John Burkett	.571 (.57143)	Boston Red Sox	18
Brian Anderson	.560 (.56000)	Cleveland Indians	19
		Kansas City Royals
Kyle Lohse	.560 (.56000)	Minnesota Twins
Darrell May	.556 (.55556)	Kansas City Royals	21
Ramon Ortiz	.552 (.55172)	Anaheim Angels	22
Ted Lilly	.545 (.54545)	Oakland Athletics	23
Victor Zambrano	.545 (.54545)	Tampa Bay Devil Rays
Barry Zito	.538 (.53846)	Oakland Athletics	25
Name	Winning Percentage	Team	Rank

	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). Future Hall of Famer Sammy Sosa is best known for wearing number twenty-one; however, when the young slugger played for the Chicago White Sox (1989-1991) he only wore number twenty-five. The first player from the Angels franchise (they were the California Angels at the time) to wear the number twenty-five was Bob Perry.