Mumbai, June 5 -- In this wild, wild French Open where the defending champion crashed in the first week and the world No.1 imploded early in the second, a teenager has held the fort for the top seeds in the women's draw. That's saying something about Mirra Andreeva, a hugely talented but also, as recent history suggested, highly volatile 19-year-old who had been primed for Grand Slam glory in the near future. On Thursday, she stood one step away from the crown. The world No.8 Russian outplayed Ukrainian Marta Kostyuk, the 15th seed who hadn't been beaten on clay this season and brushed aside Andreeva in the Madrid Open final a month ago, 6-1, 6-3 to make her first Slam final. She is the third-youngest Roland Garros singles finalist of this century. Alongside her on Saturday will be Maja Chwalinska, only the second female qualifier to reach a Grand Slam final in the Open era. The world No.114's stunning run in Paris continued as she beat Diana Schnaider 7-6(4), 6-4 in the second semi-final. The crafty, unorthodox left-handed Pole is bound to ask some different questions to Andreeva, who had all the answers in her semi-final. Except when Kostyuk's ball sailed long on match point and she flung her racquet in the air, raised both her arms and teared up after the no-handshake finish, it was a composed and clinical show by Andreeva that belied her age, the stage and those past mental meltdowns. Instances of the youngster self-destructing her mind and eventually the match due to external variables are plenty (mind you, she was, and still is, a teen), but we'll take one from last year at the same Slam. Playing French wildcard Lois Boisson in the quarters, Andreeva was in control at 5-3 in the first set. Boisson saved a set point, took it to a tie-breaker and won it. The crowd cheering for their own, Andreeva smacked the ball in frustration. As the spectators continued to get to her, she whacked another ball in the stands, asked a member of her team to leave, and blew another lead in the second set and soon the match....