Daniel John ("Dan") Haren (born September 17, 1980 in Monterey Park, California) is a baseball pitcher who currently plays for the Oakland Athletics. He is, along with Rich Harden and Joe Blanton, part of the "New Big Three", a name given to the A's 3 new young star pitchers that replaced Tim Hudson, Barry Zito, and Mark Mulder--the A's Big Three from 2000-2004.