Mirra Andreeva booked her place in the Madrid Open final after coming from behind in a second-set tie-break to defeat Hailey Baptiste on Thursday. 

Andreeva, who celebrated her 19th birthday 24 hours earlier, ensured the party continued in the Spanish capital as she earned a hard-fought 6-4 7-6 (10-8) victory. 

The ninth seed will face either Marta Kostyuk or lucky loser Anastasia Potapova in the showpiece match as she looks to claim a first WTA-1000 title since last year at Indian Wells.

But Andreeva was forced to bide her time for an opening against Baptiste, who reached the final four by stunning three-time and defending champion Aryna Sabalenka. 

However, that opportunity came in the seventh game after Baptiste had missed two points to take a 4-3 lead, and Andreeva held on to go within one set of the final. 

And Andreeva appeared on course to seal her progression in double-quick time after getting the better of Baptiste's serve in the fifth game before surging into a 4-2 lead. 

Baptiste, though, had other ideas. The American won three of the final four games to see the match go the distance, and she started strongly in the tie-break and went 4-0 up. 

A third set looked on the cards, but Baptiste squandered her three set-point opportunities, and Andreeva made the most of that reprieve by digging deep and sealing her progression when her opponent sent a backhand long. 

Data Debrief: Andreeva follows in Wozniacki's footsteps

There were no signs of tiredness from her birthday celebrations the day before from Andreeva, who remains on course to become the second Russian player to win the Madrid Open, after Maria Sharapova in 2014. 

And Andreeva's win saw her emulate Caroline Wozniacki in the Spanish capital. She is the first teenager to reach three career finals at WTA-1000 events, and just the second to reach the final in Madrid after the former world number one in 2009. 

Her third overall, Andreeva is also the youngest player to reach Tier 1/WTA-1000 finals on multiple surfaces since Sharapova in Tokyo in 2005, when WTA events were still held on carpet.