Kennedy worked in 249 games over his MLB career, 127 as a starting pitcher. In his rookie campaign in 1946 he led the National League in bases on balls, with 116 in 1862⁄3innings pitched. Towards the end of his career, he became a swing man, appearing as a relief pitcher and spot starter. He was a member of the 1951 Giants, the team that overcame a 131⁄2-game deficit on August 11 to tie the Brooklyn Dodgers and force a three-game playoff. While Kennedy did not appear in the playoff (he last pitched on September 20), he contributed to the Giant cause during their surge by allowing only one earned run in 71⁄3 innings of relief over five games.[2]
During his regular season MLB career, Kennedy allowed 928 hits and 495 bases on balls in 961 innings pitched, with 411 strikeouts. In the World Series, he compiled a 6.00 earned run average, allowing two earned runs in his three innings pitched.