Slugging Average Records by Baseball Almanac

Slugging Average Records

Baseball Almanac is pleased to present a record book full of baseball milestones for slugging averages — including career marks, single season plateaus and game related records.

"Don't quit until every base is uphill." - Babe Ruth

Slugging Average Career Records
Record	Lg	Name(s)	Team(s)	Data
Highest In A Career (Top 100)	AL	Babe Ruth	Boston	.568	.692
	AL	Babe Ruth	New York	.708	.692
	NL	Barry Bonds	Pittsburgh	.518	.607
	NL	Barry Bonds	San Francisco	.656	.607
	ML	Babe Ruth	Boston [AL]	.568	.690
			New York	.708
			Boston [NL]	.431
Slugging Average Single Season Records
Record	Lg	Name(s)	Team(s)	Data
Highest In A Season (Top 100)	AL	Babe Ruth	New York	.847	1920
Highest In A Season (Top 100)	NL	Barry Bonds	San Francisco	.863	2001
Highest In A Season By A Lefthander	AL	Babe Ruth	New York	.847	1920
Highest In A Season By A Lefthander	NL	Barry Bonds	San Francisco	.863	2001
Highest In A Season By A Righthander	AL	Jimmie Foxx	Philadelphia	.749	1932
Highest In A Season By A Righthander	NL	Rogers Hornsby	St. Louis	.756	1925
Highest In A Season By A Rookie	AL	Mark McGwire	Oakland	.618	1987
Highest In A Season By A Rookie	NL	Ryan Braun	Milwaukee	.634	2007
Highest In A Season By A Switch-Hitter	AL	Mickey Mantle	New York	.705	1956
Highest In A Season By A Switch-Hitter	NL	Chipper Jones	Atlanta	.633	1999
Lowest In A Season 150+ Games	AL	George McBride	Washington	.243	1914
Lowest In A Season 150+ Games	NL	Dal Maxvill	St. Louis	.223	1970
Lowest In A Season By The League Leader	AL	Elmer Flick	Cleveland	.466	1905
Lowest In A Season By The League Leader	NL	Hy Myers	Brooklyn	.436	1919
Record	Lg	Name(s)	Team(s)	Data
Slugging Average Records

The American League (click here for every A.L. leader in a year-by-year format) and Major League record holder for most seasons leading the league in slugging average over the course of a career is thirteen by Babe Ruth.

The National League (click here for every N.L. leader in a year-by-year format) record holder for most seasons leading the league in slugging average over the course of a career is nine by Rogers Hornsby.

Do you have your calculator ready? To calculate slugging average you only need to do the following: number of (singles + [2 x doubles] +[ 3 x triples] + [4 x home runs]) then divide by at-bats.

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