Auger-Aliassime, 18, making a splash at soggy Miami Open

Roger Federer wins another match in Miami playing outstanding tennis against Daniil Medvedev on Wednesday.

"It was tough because I know he keeps going and if you get passive you need to come up with a good passing shot".

Auger-Aliassime was particularly frustrated with one game in the first set when he double-faulted three times while serving with a 5-4 edge.

"This is definitely a match I've been looking forward to my entire life, a dream come true, to play a semifinal, with the stakes so high against your idol", Shapovalov said.

A golden opportunity arose at 2-3 only for Isner to save three break points, but Auger-Aliassime regrouped and managed to finally lead 4-3. Pliskova was up 5-0 in the second set when play was interrupted - for at least the sixth time Thursday - by rain shortly before midnight.

"Night, it's flawless for me", Pliskova said.

The duo went to a tiebreak where Isner used three-straight aces to pull ahead before finishing it.

Isner lost serve for only the third time in the tournament to fall behind early.

Miami Open: Federer advances, Halep downs in-form Venus
Roger Federer continued his quest for a fourth Miami Open crown after reaching the last 16, but Grigor Dimitrov crashed out. After dropping the first set, Federer broke Albot while leading 6-5 in the second with a backhand volley victor .

The men's quarterfinals were also going on Thursday night, with fourth-seeded Roger Federer facing sixth-seeded Kevin Anderson - the victor of that match set to next meet the victor of the other remaining quarter between 20th-seeded Denis Shapovalov and 28th-seeded Frances Tiafoe.

I thought it was the end of the world, but I love the team competition and that's where I feel i have a bit of a team today.

Isner got the first point for a mini-break in the second tiebreak and never trailed.

He was scheduled to return to action at a clay-court event in Morocco starting April 8, but said after Friday's match that he will likely skip that event and start his clay season at the Masters 1000 event in Monte Carlo the following week.

Auger-Aliassime, the youngest semi-finalist in the tournament's 35-year history, refused to go away without a fight and broke Isner for a second time but was unable to force a decider, when leading 5-4.

"Pretty insane. Everyone is super excited back home", said Auger-Aliassime, who wasn't in the top 100 of the world rankings two months ago and now will climb to No. 33 next week - if not higher. "That's not what I wanted to do but maybe what it took". They didn't begin play until 2:08, and the delays were just getting started. Last year, he became the youngest player in 13 years to break the Top 30. "We'll see what I can do".

Halep will meet world number seven Karolina Pliskova in the last four on Thursday after she won the battle of the Czechs with Marketa Vondrousova 6-3, 6-4. "But if I do it, I will be very proud".

  • Lawrence Cooper