Bernard Tomic has claimed his second career title on the ATP world tour with victory over power-serving Croat Ivo Karlovic in the final of the Claro Open in Bogota, Colombia.

The Australian world No.124 withstood 39 aces from his second-seeded opponent to take Sunday’s match 7-6 (5) 3-6 7-6 (4) in almost two hours and 13 minutes.

The win, just days after he was dumped by global management firm IMG, is set to shoot the 21-year-old back into the top 100 on the world rankings – possibly as high as No.70.

It is his first title win overseas, following his triumph at the 2013 Sydney International, and comes with a healthy $US120,000 ($A129,835) paycheck.

Tomic is the second Australian to beat Karlovic in an ATP final this past week, with veteran Lleyton Hewitt toppling him in Newport.

The good news continued for Australia in the doubles final, with Samuel Groth and Chris Guccione defeating local duo Nicolas Barrientos and Juan Sebastian Cabal 7-6 7-6 9-11.