Spanish tennis player Garbine Muguruza, ranked 20th in the world, qualified on Monday to the quarterfinals of the French Open after she beat Italy's Flavia Pennetta 6-3, 6-4 in one hour and 26 minutes.

Pennetta, ranked 28th in the world, broke the Spanish-Venezuelan's serve at the very beginning of the match, giving her a 2-0 lead on Court Suzanne Lenglen.

However, Muguruza came back and broke the Italian's serve twice to bring the score to 2-2, then pushed forward to a 5-3 lead, and took one last game to win the first set.

The second set played out in a similar way, as Pennetta led 4-1 on her to way to take the set, but then Muguruza kicked into gear and won five straight games and glided into the quarterfinals.

In a courtside interview following the match, Muguruza admitted that while she may have appeared calm during the second set, she was "very nervous" on the inside.

The 21-year old Venezuelan-born Spaniard will play the next round of Roland Garros against the 13th-ranked Czech player Lucie Safarova, who defeated the 2nd-ranked defending champion from Russia, Maria Sharapova, 7-6 (7-3), 6-4.