The Mets purchased the contract of right handed pitcher John Strohmayer from the Montreal Expos on July 16, 1973. He made his Mets debut the same day pitching one inning of relief against the Atlanta Braves in an 8-6 loss. He appeared in another six games for the Mets in 1973 but with no success. In ten innings, he posted an 8.10 ERA. Strohmayer spent the 1974 season pitching for the Tidewater Tides, their Triple A affiliate. He posted a 2-4 record with the Tides in 39 games. He returned to the Mets in September and pitched in just one game, pitching the final inning in a 12-0 loss to the Chicago Cubs.
In eight games over two seasons for the Mets John Strohmayer pitched 11 innings and posted a 7.36 ERA.
While with the Mets Strohmayer wore number 39.
John Strohmayer also played for the Montreal Expos from 1970-1973.