In 1972, LaGrow had a 1.32 earned run average (Adjusted ERA+ of 240) in 16 games, also pitching one scoreless inning in Game 2 of the 1972 American League Championship Series against the Oakland Athletics. LaGrow's single inning led to one of the most memorable moments of the series. In the bottom of the seventh inning, Bert Campaneris came to bat, having had three hits, two runs scored and two stolen bases in his first three at-bats. LaGrow's first pitch hit Campaneris in the ankle. Campaneris staggered for a moment, glared at LaGrow and then flung his bat toward LaGrow. The bat spiraled at LaGrow five feet off the ground, but LaGrow ducked, and the bat narrowly missed LaGrow, landing a few feet behind the mound. Both benches cleared but no brawl ensued. Tigers' manager Billy Martin had to be restrained by umpires and teammates to prevent him from going after Campaneris. LaGrow and Campaneris were suspended for the rest of the ALCS.