1977 – Free agent Orioles pitcher Ross Grimsley is signed by the Montreal Expos. Grimsley will reward Montreal with a 20-game winning season in 1978, the only one in franchise history.

 

On December 21, 1977 — 1977 – Free agent Orioles pitcher Ross Grimsley is signed by the Montreal Expos. Grimsley will reward Montreal with a 20-game winning season in 1978, the only one in franchise history.

 


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Sources:

Baseball Reference December 21

SABR Games Project

National Pastime December 21

National Pastime December 21

Hall of Fame

Retro Sheet