NBA pioneer Nat "Sweetwater" Clifton played minor league baseball.

Jackie Robinson and other "first" American born blacks to play pro baseball, football, basketball. Thursday, April 14, 2016

NBA: Oct. 31, 1950 Earl Lloyd Rochester Royals, Nov. 1, 1950 Chuck Cooper Boston Celtics, Nov. 3, 1950 Nat "Sweetwater" Clifton New York Knicks

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That link above has this:

https://en.wikipedia.org/wiki/Nathaniel_Clifton

Still a talented baseball first baseman, during the basketball off-season in 1949 Clifton played for the Chicago American Giants in Negro league baseball.

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The Negro Leagues database does not contain data later than 1948 for the Chicago American Giants:

https://www.seamheads.com/NegroLgs/organization.php?franchID=CAG

And the list of Chicago American Giants players for 1947 and 1948 does not include Sweetwater Clifton:

https://www.seamheads.com/NegroLgs/team.php?yearID=1947&teamID=CAG&LGOrd=2

https://www.seamheads.com/NegroLgs/team.php?yearID=1948&teamID=CAG&LGOrd=3

However, there is 1949 and 1950 minor league baseball data for Cleveland affiliates for "Sweetwater" Clifton ages 26-27:

https://www.baseball-reference.com/register/player.fcgi?id=clifto001nat

The Cleveland baseball team had Luke Easter playing first base full time 1950-1952, ages 34-36. OPS+: 122, 124, 142.

Clifton's NBA stats: https://www.basketball-reference.com/players/c/cliftna01.html

Nathaniel Clifton

(born Clifton Nathaniel)

(Sweetwater, Nat, Sweets)

Position: Power Forward ▪ Shoots: Right

6-6, 220lb (198cm, 99kg)

Born: October 13, 1922 in Little Rock, Arkansas us

Died: August 31, 1990 (Aged 67-322d)

College: Xavier University of Louisiana

High School: DuSable in Chicago, Illinois

NBA Debut: November 4, 1950

Hall of Fame: Inducted as Contributor in 2014 (Full List)

Career Length: 8 years

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