Gardner appeared in three games for the A's in 1973 when his contract was purchased by the Milwaukee Brewers. He appeared in ten games for the Brewers, the last of which, he lasted just a third of an inning and gave up four runs to the A's. Following the game, he was returned to the A's. He spent 1974 in the Detroit Tigers' organization, and 1975 back in the Yankees' farm system before retiring.
