ROME - Dino Prizmic followed up knocking out Novak Djokovic from the Italian Open by beating France's Ugo Humbert 6-1, 7-5 on Sunday to reach the last 16 in Rome.
Prizmic had to qualify for the main draw but the Croatian player looks like he could be a contender after another brilliant display of power and precision on clay.
The 20-year-old raced into a 5-0 lead in the first set, which he closed out in just 28 minutes against a shellshocked Humbert, who was seeded 31st.
Such was Prizmic's dominance in the first set that he could even afford to try a trick shot between his legs and give up a point in game six.
Humbert battled back in the second set but after he gave up his serve for the third time in game 11 Prizmic closed out on his second match point.
After his superb performance on the Pietrangeli court Prizmic will face 13th seed Karen Khachanov in the next round.
"I just want to play my game and to be myself on the court and we will see," Prizmic later told reporters.
"Maybe for me the goal is to be top 30 at the end of the year but I just want to stay healthy and to play as much as I can."
As it stands Prizmic will already be up 11 places to 68th come Monday week, just before the start of the French Open, after his best ever performance in a Master 1000 tournament.