This is the continuation of a series on who has had their number retired by the Astros, and why. Click here to see the first post, on Jim Umbricht.
Don Wilson came to the Astros in 1964 from Compton Community College in Los Angeles. He threw 28IP for the Colts of the Cocoa Rookie League in 1964 and posted a 4.18 ERA. The Astros' eyes were opened, however, in 1965, when he threw 181IP, allowing 132H/29ER, 168K:46BB for Cocoa of the Single-A Florida State League, going 10-8 with a 1.44 ERA/0.98 WHIP.
1966 saw Wilson advance to Amarillo of the Double-A Texas League.