List of Houston Astros Opening Day starting pitchers

The
The Astros began to play in 1962 as the Houston Colt .45s (their name was changed to the Astros in 1965 when the
Roy Oswalt has made the most Opening Day starts for the Astros, with eight such starts from 2003 through 2010.[4][5][6] Three different pitchers have each made five Opening Day starts for the Astros: J. R. Richard (1976–1980), Mike Scott (1987–1991) and Shane Reynolds (1996–2000). Dierker made four Opening Day starts for the Astros, and Joe Niekro and Hall of Famer Nolan Ryan made three apiece.[4] Dierker has the best record in Opening Day starts with four wins and no losses. Niekro and Don Wilson share the worst record in Opening Day starts with no wins and two losses each. Niekro also had one no decision.[4]
The Houston Astros have used 27 different
Key

Season | Each year is linked to an article about that particular Colt .45s / Astros season. |
W | Win |
L | Loss |
ND (W) | No decision by starting pitcher; Astros won game |
ND (L) | No decision by starting pitcher; Astros lost game |
Final score | Game score with Colt .45s / Astros runs listed first |
Location | Stadium in italics for home game |
Pitcher (#) | Number of appearances as Opening Day starter with the Colt .45s / Astros |
* | Advanced to the post-season |
** | NL Champions |
*** | AL Champions |
† | World Series Champions |
Pitchers

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