Jim Willis was born March 20, 1927, in Doyline, LA, USA.

Jim Willis is 6 feet 3 inches tall. He weighs 175 pounds. He bats left and throws right.

Jim Willis debuted on April 22, 1953, playing for the Chicago Cubs at Wrigley Field; he played his final game on June 5, 1954, playing for the Chicago Cubs at Wrigley Field.

In 1954, Jim Willis played in 14 games, all for the Chicago Cubs, and batting in all of them. He had 5 at bats, getting 0 hits, for a .000 batting average, with 0 runs batted in. He was walked 0 times. He struck out 3 times.

Jim Willis played in 13 games at pitcher for the Chicago Cubs in 1953, starting in none of them.

He made 4 putouts, had 12 assists, and committed no errors, equivalent to 0 errors per game (estimate based on total games played in). He had no double plays.