Clarence McKay "Ace" Parker (May 17, 1912 – November 6, 2013) was an American football and baseball player and coach.

He attended Woodrow Wilson High School in Portsmouth, Virginia, graduating with the class of 1933 and starring in five sports.

Baseball was the glamour pro sport at the time and the NFL had a rough, vulgar reputation.

Parker thus became a true two-sport phenomenon, playing both Major League Baseball and NFL football in both 1937 and 1938.

Parker, playing various infield positions, batted .179 over two seasons with the A's, scoring 20 runs with 25 RBI over 94 games.

[4] When Parker joined the Dodgers in 1937, Brooklyn had been a perennial NFL cellar-dweller in the East Conference since 1930.

After serving for over two years, Parker returned to the NFL, this time with the short-lived Boston Yanks, but at age 33, he took on a minor role.

He rejoined the former owner of the Dodgers, Dan Topping, in 1946 as part of the New York Yankees of the new All-America Football Conference (AAFC).

He was also a founding member of the Elizabeth Manor Golf and Country Club in Portsmouth, Virginia.

On May 7, 1937, Parker appeared for the Philadelphia Athletics while Hornsby played one of his last games for the St. Louis Browns.

[6] Before his death, Parker and Hall of Famer Bobby Doerr were the last men to play on the same field as baseball immortal Lou Gehrig.