The Hangover star Justin Bartha has stepped in to replace actor David Krumholtz after he quit an upcoming revival of Neil Simon's The Sunshine Boys in Los Angeles.

Krumholtz has left the cast of the Ahmanson Theatre play citing personal reasons, leaving Bartha just weeks to perfect the role of agent Ben before the production opens for previews on 24 September (13).

The switch isn't the play's first cast shuffle - Richard Griffiths was set to reteam with Danny DeVito in Los Angeles after playing opposite him on the West End stage in London, but the British thespian died in March (13). He was replaced by DeVito's former Taxi co-star Judd Hirsch.