Delray Beach, FL (SportsNetwork.com) - Fourth-seeded Ivo Karlovic of Croatia and unseeded American Donald Young will play in the Delray Beach Open final after they won their semifinal matches on Saturday.

Karlovic fired 17 aces in a 6-3, 6-4 victory over fifth-seeded Frenchman Adrian Mannarino to reach his second final at this tournament. He was the runner-up in 2010.

Young, meanwhile, rallied to beat Aussie Bernard Tomic 4-6, 6-4, 6-2.

Karlovic will play in his 13th career final and will try for his sixth title. He lost all four finals he played in 2014.

Young advanced to his second career final. He was the runner-up in Bangkok in 2011.

The 2015 Delray champion will earn $84,250.