INDIAN WELLS (REUTERS) - Stan Wawrinka raised his game on the big points and dominated the climactic third set tie-breaker to beat Dominic Thiem 6-4, 4-6, 7-6 (7-2) on Thursday and reach the semi-finals of the BNP Paribas Open at Indian Wells.
Third seed Wawrinka, who six months ago beat Novak Djokovic to win the 2016 US Open, won a gripping slugfest against the 23-year-old Austrian, hammering home five third-set aces including one to reach quadruple match point in the tie-break.
"The level was really high tonight," Wawrinka, 31, said in an on-court interview. "I'm really happy the way I was playing, the way I found a way to win it."
Thiem kept pace with the Swiss on the strength of his booming forehand, but by the end of the match, he lost the range on his favoured shot, belting three forehands well long to lose his way in the third-set decider.
"The player who was the most aggressive, was dictating, was winning most of the points," said Wawrinka, who saved eight of 11 break points. "I'm really happy to have served well in the tie-break. I think that was the key."
Wawrinka broke in the second game to storm out to a 3-0 lead. Thiem then swept the next three games to level the set on the way to the decider.
The Swiss advanced to his first final four at Indian Wells, where he will meet 21st-seeded Pablo Carreno Busta, who was also extended to a third-set decider in his 6-1, 3-6, 7-6 (7-4) win over Pablo Cuevas of Uruguay.
Wawrinka notched the 450th win of his career in beating Thiem and is bidding to win his second ATP World Tour Masters 1000 crown to add to the 2014 Monte Carlo trophy he lifted after defeating Roger Federer 4-6, 7-6 (7-5), 6-2.