Mirra Andreeva continued her relentless form at the WTA Finals, booking her place in the championship match with a straight-sets win over Jessica Pegula.

The teenager, who is making her debut at the end-of-year event, took an hour and 25 minutes to seal a 6-3 6-4 victory and deny the home favourite at Indian Wells.

Pegula was appearing in her third semi-final at this event in five years, and landed the first blow when she broke in game three of the opening set.

However, Andreeva hit straight back in the following game, then claimed another break in the eighth, before serving out for her seventh straight set this week.

Pegula had survived match point against Linda Noskova in her final round-robin match, recovering to secure second place in Group One.

The American grabbed the first break of the second set to lead 3-1. Yet Andreeva came roaring back, reeling off the next four games to take control at 5-3, before holding serve to book her place in Sunday's final.

18 - Mirra Andreeva (18) has conceded the fewest games en route to the final at the WTA Finals, since the reintroduction of the Round Robin format in 2003. ?!?!?! #FAGEWTAFinals #TheUltimateStage | @WTA https://t.co/AbpJsvCW6t

— OptaAce (@OptaAce) November 14, 2026

Youth topples experience at Indian Wells

Andreeva was the youngest semi-finalist at this event since Caroline Wozniacki in 2009, while Pegula was the oldest player to appear at the WTA Finals since Venus Williams nine years earlier.

The teenager arrived in this last-four clash fresh from three successive straight-set wins over the likes of Aryna Sabalenka and Elina Svitolina, and she sealed her seventh straight set after recovering from an earlier break.

Pegula, the third player to reach successive semi-finals at this event after turning 30 along with Martina Navratilova and Serena Williams, looked to respond and become the first player to beat Andreeva in a WTA semi-final when losing the opening set.

Yet the fifth seed, despite being broken, got on a roll similar to the ones that saw her reel off 11 straight games against Sabalenka, and seven on the spin against Svitolina.

Indeed, she won four successive games, winning 12 of 16 points along the way, which proved crucial as she went on to secure victory.

Andreeva has conceded the fewest games (18) en route to the final of this event under the current format, and is the third-youngest finalist this century - older than only Maria Sharapova (in 2004) and Kim Clijsters (in 2002).

The teenager is also just the third player to win all of her first four matches at the WTA Finals in straight sets, after Chris Evert and Serena Williams.