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Monterrey, Mexico (SportsNetwork.com) - Two days after she knocked off the tournament's No. 1 seed, Japan's Kimiko Date-Krumm battled for another win Wednesday at the Monterrey Open.

Date-Krumm ousted 2012 champion Timea Babos of Hungary with a 6-4, 6-7 (4-7), 6-4 victory in the second round of the $500,000 event at Club Sonoma.

The 43-year-old was coming off Monday's 7-5, 6-2 win over Flavia Pennetta.

Former world No. 1 Caroline Wozniacki of Denmark, seeded third this week, beat France's Kristina Mladenovic 6-3, 6-4.

Serbia's Jovana Jaksic defeated Thailand's Luksika Kumkhum 3-6, 7-6 (7-5), 7-6 (7-2) and Czech Karolina Pliskova topped Croatia's Donna Vekic 4-6, 6-2, 6-3.

This week's winner will claim $111,389.