Alize Cornet overcame a stiff challenge to reach the QF (photo: sportsnet.ca)

It turned out to be a strenuous day for the seeds at the Katowice Open on Wednesday. But, they ultimately managed to keep the upset bug at bay.

2^nd seed Alize Cornet of France rallied from a set down to topple 65^th-ranked Polona Hercog 4-6 6-1 6-3 in a grueling second-round battle that went on for just over a couple of hours.

3^rd-seed Italian Camila Giorgi was also long-drawn-out to three sets by little-known Pole Magda Linette, before the former pulled off a rusty 6-7 6-2 6-3 triumph in 2 hours and 26 minutes.

2^nd Round Results

K Koukalova d. V Zvonareva 6-1 6-4

(3) C Giorgi d. (Q) M Linette 6-7 6-2 6-3

AV Uytvanck d. C Witthoeft 6-3 6-3

(2) A Cornet d. P Hercog 4-6 6-1 6-3

1^st Round Results

M Niculescu d. K Mladenovic 6-4 6-4