Donna Vekic defeated Maria Sakkari for the fifth time in seven career meetings. The latest came Tuesday in a 7-6(3), 6-1 win against the fifth-seeded Greek in the first round of the San Diego Open.

From 5-3 down in the opening set, Vekic won 10 of the last 12 games to earn a fourth career hard-court win in the head-to-head. Now ranked World No.77, the former Top 20 player qualified for this week's WTA 500 event and has yet to lose a set.

San Diego: Vekic beats Sakkari for 1st Top 10 win of 2022

Bestie battle: With an on-court history dating back to 2016, Sakkari and Vekic are also good friends off the court. They hadn't played in more than two years, and the Croatian noted her slow start in the match might've been a consequence of their close relationship. 

"I think we were both really nervous at the beginning, so it was a lot of everything from the start," Vekic said, "but I managed to calm down a little bit and I found my zone in the second set.

"I texted her straight away when the draw came out and I was like, 'Oh my god, we're playing each other.' It's not easy. We fight on the court, but we're super-close off the court."

Stat check: Thought both players hit 19 winners in the 96-minute contest, it was Vekic who was the more consistent. She totaled 13 unforced errors to Sakkari's 22 and won five of the six break points she created for herself. Sakkari broke serve just three times in seven chances.

It's Vekic's first Top 10 win in more than a year, dating back to a victory against Aryna Sabalenka at the Tokyo Olympics last summer. She now owns nine career wins against Top 10 players.

Pliskova bounces back to oust Dolehide; Stephens holds off Teichmann

After an earlier-than-expected exit on home soil last week to American qualifier Alycia Parks, Karolina Pliskova wasn't about to let history repeat itself.

The former World No.1 and two-time major finalist handled Caroline Dolehide, who knocked out qualifying seeds Madison Brengle and Jil Teichmann to reach the main draw. 

Pliskova won 6-3, 6-4 and needed 82 minutes to advance to a second-round meeting with Vekic, against whom she's 6-1.

Speaking of Teichmann, she nonetheless made it through to the main draw as a lucky loser when Veronika Kudermetova withdrew with a shoulder injury.

The last-minute change of opponent was no trouble for Sloane Stephens, who moved through to the second round with a 6-1, 7-6(4) win. 

Stephens saved set point in the second set with Teichmann serving up a break at 5-4 to beat the Swiss No.2 for the second time this year. She'll be the first opponent for No.3 seed Aryna Sabalenka.