On September 13, 1999 — 1999 – Mike Hampton (20-3) wins his 20th game, 13 – 2, over the Phils and the Astros win their club-record 11th straight game.
Support This Day In Baseball on Patreon
Sources:
Baseball Reference September 13
National Pastime
Retro Sheet
Hall of Fame
SABR Games Project
Replay The Game