Second seed Iga Swiatek will face Naomi Osaka for the Miami Open title after the Pole defeated American Jessica Pegula in Thursday’s semi-finals.

After Japan’s Osaka battled past Belinda Bencic 4-6, 6-3, 6-4 earlier in the day, Swiatek, who will become world No.1 on Monday, claimed her 16th straight win with a 6-2, 7-5 victory over Pegula to reach a third straight WTA 1000 final.

Swiatek sailed through the opening set but had to fight back from an early break down in the second. She squandered two match points at 5-4 before sealing victory two games later.

The 21-year-old is the first player to make back-to-back finals at Indian Wells and Miami since Victoria Azarenka won the ‘Sunshine Double’ in 2016.

Swiatek has faced Osaka only once, with the Japanese player winning in straight sets at Toronto in 2019. “My second match on the WTA Tour, when I felt I am doing a breakthrough, was against her (Osaka),” said Swiatek, who will go top of the rankings following Ash Barty’s retirement.

“Even though I lost that match, it inspired me to work harder because she was No.1 back then. Right now I feel like I am on a different level, so I can actually compete ... We’ll see how it is going to go. I’m really excited.”

Four-time grand slam winner Osaka fired off 18 aces as she defeated Olympic champion Bencic to reach her first Miami Open final.

Osaka conceded only two first-serve points in the first set but was unable to convert when it counted as Bencic saved a pair of break points in the second game. Osaka, who had not dropped a set in the tournament, then lost her serve in the third game and again in the fifth.

The pair traded breaks early in the second set before Osaka seized the momentum and never looked back.

“She had a really amazing service return. There were times I thought that I hit great serves but she just hit winners,” Osaka said. “(I was) just battling my inner thoughts and trying to know that I must play one point at a time and adjust if I have to but try not to overwhelm myself with my thoughts.”

Osaka reached her first final since her second Australian Open title a year ago.

“I feel like if I was negative for a split second I would have lost the match today,” Osaka said.