the astros became an american league team on november 15, 2011.
what year did the astros become an american league team?
november 15, 2011
the astros have completed 56 seasons in major league baseball, qualifying for the postseason eleven times and reaching the world series twice (2005 and 2017). established as an expansion franchise in 1962, the team's first winning season was in 1972. in 1980 the astros made their first postseason appearance. from 1997–2005, the team made postseason appearances in six out of nine seasons. from 2006 to 2013 the franchise experienced a steady decline with consecutive 100-loss seasons in 2011, 2012 and 2013. in 2015 the team defeated the new york yankees in the 2015 american league wild card game. this was the astros' first postseason appearance as an american league team, and first overall since 2005. it was also the astros' first playoff win since game 6 of the 2005 national league championship series. houston would qualify for the playoffs again in 2017, defeating the boston red sox in the 2017 american league division series and the new york yankees in the 2017 american league championship series. the team would go on to defeat the los angeles dodgers in the 2017 world series, winning the championship for the first time in team history.
list of houston astros seasons
the milwaukee brewers, an american league team between 1969 and 1997, and the houston astros, a national league team between 1962 and 2012, are the only franchises to play in both the alcs and nlcs. the astros are the only team to have won both an nlcs (2005) and an alcs (2017). every current american league franchise has appeared in the alcs.





























section::::championship trophy.





























the william harridge trophy is awarded to the alcs champion. the trophy's namesake comes from the american league president from 1931 to 1959.





























section::::most valuable player award.
american league championship series