Lachemann, who would also go on to manage in the Majors, just as his brother Rene Lachemann, appeared in 28 games for Oakland, going 4-1 with an earned run average of 3.95 over 43.1 innings of work with a couple of saves.
He would pitch for parts of two more seasons before toiling in the Minor Leagues through the 1974 season, that last two in the Montreal Expos organization.
All told, he finished his Big League career with a record of 7-4, posting a final ERA of 3.44 over 70 appearances and 102 innings pitched, collecting five saves, with all of his time in the Majors coming out of the bullpen.
Between 1994 and 1996 he’d manage the California Angels, finishing his managerial career with a 161-170 record, leading the Angels to a second place finish in 1995.