On April 12, 1980 — After eight years with the California Angels, Nolan Ryan makes his debut with the Houston Astros. Ryan, who did not come to bat the previous seven seasons, hits a 3-run homer in the 4th inning. The Astros lose to the Dodgers in 17 innings, 6 – 5.

 


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Sources:

Baseball Reference April 12

SABR Games Project

National Pastime April 12

Hall of Fame

Retro Sheet