 Lancaster started the opening game of the 2013 season; he played the whole game in the win against his former club the Fort Lauderdale Strikers.On 18 May 2013, he scored his first goal for the club when he headed the second goal in the victory against the Carolina RailHawks.Lancaster featured in 11 games as Atlanta won the Spring season, they sealed the championship with the 3–0 win against Minnesota United at the National Sports Center in July, securing their place in Soccer Bowl 2013 in the process.