Juan Carlos Ferrero falls at Umag
The 19-year-old Pavic saved all four break points he faced and converted four out of the six he earned.
Need the scores from any match played in today's tournaments? Results
"My coach told me to play my game and not pay attention to the fact that is a former No. 1," Pavic said. "This win means so much."
Ferrero won at Umag in 2010, defeating Potito Starace of Italy in the final for one of his 16 career singles titles. Earlier Tuesday, Starace beat Slovak qualifier Ivo Klec 6-3, 7-6 (6) to advance to the second round.
Copyright 2012 by The Associated Press
MORE TENNIS HEADLINES
- Sock advances in Atlanta with straight-sets win
- Top seeds Cirstea, Svitolina win Baku openers
- Two-time champ Bellucci wins Swiss opener
- Rosol, Berlocq both advance at Croatia Open