sentences:  On March 3, 2013, Altidore surpassed Clint Dempsey for most goals by an American in a European club season with his 24th goal of the 2012–13 campaign.During the 2013 Summer transfer window, Sunderland signed Altidore.He spent one-and-a-half seasons there, with a poor goalscoring record, then returned to MLS with Toronto.