No future Astros, but several former Astros with birthdays today ~
OF Art Gardner (60)
A second round pick by the Astros in 1971, Gardner played for Houston in 1975 and in 1977. In 79 games, he hit .167/.216/.167.
RHP Aurelio "Senor Smoke" Lopez (died September 22, 1992 at age 44)
Lopez came to Houston as a free agent in June of 1986 and played for the Astros for a little over a year before his release in June 1987 at the end of his career. In 71 games for Houston, he was 5-4 with a 3.80 ERA and a 1.207 WHIP. His best years were with Detroit where he earned a World Series ring and for whom he made his sole All-Star appearance.
C Troy Afenir (49)
A first round pick by Houston in 1983, Afenir played in only 10 games for the Astros in 1987 before being included in an April 1989 trade to Oakland. In those 10 games, he hit .300/.300/.350.
RHP Manuel Barrios (38)
Signed as a free agent in January 1993, Barrios played in only two games for the Astros in 1997 with rather inauspicious results. His entire major league career consisted of 6.2 innings pitched for three different teams with a 6.75 ERA and a 2.550 WHIP.
RHP Billy Sadler (31)
Originally drafted by the Giants in the sixth round in 2003, Sadler signed as a free agent with Houston in August 2009 and pitched 1.1 innings in one game for Houston in 2009 with forgettable results.