MADRID, Spain – Romania’s Irina-Camelia Begu backed up her win over 2014 Wimbledon finalist Eugenie Bouchard with an even bigger result, toppling No.3 seed and 2015 Wimbledon runner-up Garbiñe Muguruza, 5-7, 7-6(4), 6-3, to reach the third round of the Mutua Madrid Open.

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Begu needed three sets to battle past Bouchard on Sunday, and things hardly differed on Monday night against Muguruza; despite leading 5-2 in each of the first two sets, the hometown favorite battled back each time – saving three set points at 5-3 in the second – to take the opening set and get within four points of victory in the second set tie-break.

“I was a little bit disappointed in my game when I was leading; I wouldn’t be as aggressive as I was before,” Begu said about her lost leads after the match. “My coach told me I’m really close, and really playing well. I just had to keep fighting for every ball, and that was the key.”

The Romanian, however, wouldn’t be denied; becoming something of a marathon woman – winning her last six three-setters reaching the quarterfinals of the Volvo Car Open with a trio of grueling matches – Begu recovered from a mini-break down to level the match and lead by a break in the decider.

“In Spain and especially in Madrid, there are a lot of Romanians, so I think it was 50/50!” Begu laughed when asked about the crowd support. “It’s tough to play a local player, and especially against Garbiñe, one of the best players. I was ready for this match, and I think that was the key as well.”

Muguruza hit 39 winners in the two hour and 42 minute epic, and managed to draw level once more, but Begu swept three of the final four games, hitting 30 winners of her own and only 34 unforced errors to 42 from the World No.4.

“I think I could have started better, but I managed to come back,” Muguruza said in her post-loss press conference. “I managed to fight and find my game.

“But I think it has been a very good game. I think she played pretty well. I played against Begu before and I think that today she played much better than previous times.

“I think that she served very well. I had to fight everything that I can, but just didn’t go my way this time.”

Up next for Begu is Christina McHale, who began the day with a win over No.13 seed Karolina Pliskova in straight sets.