DOHA, Qatar – Elena Vesnina notched one of the biggest wins of her career over No.2 seed Simona Halep in the second round of the Qatar Total Open, shocking her 6-7(1), 6-4, 6-1.

The Russian qualifier, ranked No.118 in the world, was fresh off of a first round upset against Caroline Garcia, a semifinalist last week in Dubai. She was up against the World No.4, who was playing on her favorite surface and on familiar ground – Halep is a 2014 champion here in Doha and last year had a WTA-leading 44-11 win-loss record on hardcourts.

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Halep had plenty of opportunities to put Vesnina away in the first set but the Russian refused to fold -Halep created 13 break opportunities and only converted on two of those occasions. But one of those occasions was exactly when it counted; Vesnina was serving for the set at 6-5 when Halep broke her serve, sending the match into a tiebreak.

The Romanian found another gear and played a near-perfect tiebreak, allowing Vesnina only one point before grabbing the first set 7-6(1).

Halep backed up her dominance in the tiebreak with an equally commanding start to the second set, winning four out of the next five games to race ahead to a 4-1 lead.

Seemingly down and nearly out of the match with the World No.4 up a set and a double break, Vesnina was somehow still able to gut out a comeback. What was going through the Russian’s mind?

“That’s my character – I’m always fighting ’til the end,” she said. “I was thinking, ‘I’m on center court here in Doha, I’m playing Simona, 1-4 down – but it doesn’t matter.

“I just fight game by game, ball by ball, and it just worked.”

Her mentality definitely worked: Vesnina came back to win the next four out of five games to take back the set at 6-4 and level the match. Halep started out the final set with a break at love, but Vesnina stayed on course and won six consecutive games, sealing the final game of the match with a timely ace followed by a deadly backhand down the line for match point.

With the win Vesnina not only reached her first round of 16 stage of the year, she also scored her sixth Top 10 win of her career – the first since 2013.

“For the last two years, this win is No.1 for me,” an emotional Vesnina said after the match. “Simona is a great player, she’s such a solid player. She’s had an amazing couple of years; she’s in Top 10 in the world. I’m really pleased with my game today.”