Two days after being released by Pittsburgh, Klinger was signed by Boston,
Enos Slaughter led off the bottom half of the inning with a single off of Klinger. After a failed
bunt attempt by
Whitey Kurowski and a flyout to left field by
Del Rice, Slaughter found himself still on first base with two outs. With outfielder
Harry Walker at the plate with a two balls and one strike count, the Cardinals called for a
hit and run. With Slaughter running, Walker lined Klinger's pitch to left-center field.
Leon Culberson fielded the ball, and threw a relay to shortstop
Johnny Pesky. Slaughter rounded third base heading for home, running through the stop sign from his
third base coach. What exactly happened when Pesky turned around is still a matter of contention, but catcher
Roy Partee caught a delayed throw up the line, allowing Slaughter to score what proved to be the winning run. Klinger issued an
intentional walk to the next batter, then was relieved by
Earl Johnson who got a ground out to retire the Cardinals. When the Red Sox were unable to score in the top of the ninth (despite their first two batters getting on base), Klinger was charged with the loss. It was his only appearance in the series – 5 batters faced, innings pitched, and 1 earned run – and the only postseason series of his career. During the 1947 season, Klinger again made 28 appearances; he registered 5 saves, and had a 1–1 record with a 3.86 ERA. He was released during the final week of the season, drawing a close to his MLB career. In his two seasons with Boston he had 14 saves, a record of 4–3, and a 3.00 ERA while appearing in 56 games (55 of them in relief) and hitting for a .240 average. Overall, Klinger was a better than average hitting pitcher in his career, batting .204 (71-for-348) with 28 runs, 5 doubles, 21 RBI, 20 walks and 18 sacrifice hits. Defensively, he compiled a .980
fielding percentage with only 6 errors in 301
total chances in 1089
innings pitched. ==Later career==