Mashore appeared in 66 games for the Expos in 1971, hitting .193 with 22 hits over 114 at-bats while manning the outfield at all three slots.
He would put in 5 partial seasons in the Majors, all but his debut with Montreal, and a scant 2 games with the Cincinnati Reds in 1969 at the age of 24.
After the 1973 season he’d play 1974 in the Minors for Memphis, the Triple-A affiliate for the Expos before leaving the game for good, finishing up with a .208 batting average based on his 87 hits over 419 at-bats in 241 games.