Nick Kyrgios put on a show as he prevailed against top seed Stefanos Tsitsipas in an entertaining ATP Citi Open semi-final.

Kyrgios saved a match point in a third-set tie-break to see off Greek star Tsitsipas 6-4 3-6 7-6 (9-7) in a Washington thriller on Saturday.

Much was expected from the blockbuster meeting and it lived up to the hype – Kyrgios producing underarm serves and even consulting a fan on match point as he booked a spot in the final.

Kyrgios, who led 5-1 in the final-set tie-break, even delivered shoes to Tsitsipas in the wildly entertaining contest in front of a sell-out crowd after the world number six struggled to find a spare pair.

Seeking his sixth career ATP title and second of the year, Kyrgios improved to 4-1 against top-10 players this season – the best record on tour in 2019.

Kyrgios, who won the Mexican Open in March, will face third seed Daniil Medvedev in Sunday's decider in the American capital.

Medvedev eased past lucky loser Peter Gojowczyk 6-2 6-2 as the Russian reached his eighth ATP final, with a fifth title up for grabs.

Stefanos Tsitsipas and Nick Kyrgios will meet in a blockbuster Citi Open semi-final after straight-sets wins on Friday.

Tsitsipas, the top seed at the ATP 500 event, ran away with a 7-5 6-0 victory over Frenchman Benoit Paire in their quarter-final.

The Greek star is into his seventh semi-final of the year and is set to rise into the world's top five after his run in Washington.

Tsitsipas' win over Paire was not without some controversy, with the 10th seed unhappy with the 20-year-old needing to change shoes early in the second set.

In what shapes as an entertaining last-four clash, Tsitsipas will face Kyrgios, with the pair having played doubles together in Washington.

Kyrgios' fine run continued with an impressive 6-3 6-3 victory over lucky loser Norbert Gombos.

In the other semi-final, Daniil Medvedev will take on Peter Gojowczyk.

Russian third seed Medvedev got past sixth seed Marin Cilic 6-4 7-6 (9-7) and lucky loser Gojowczyk upset Kyle Edmund 6-3 4-6 6-3.

In the doubles, brothers Andy and Jamie Murray bowed out in the quarter-finals.

Roger Federer opened his quest for a sixth Indian Wells Masters title with a comfortable 6-1 7-5 victory over Peter Gojowczyk.

Federer arrived in California having sealed the 100th title of his career at the Dubai Tennis Championships, and he looked in the mood to add to that tally.

There was little Gojowczyk could do to stop the fourth seed in the opening set, Federer not dropping a point off a first serve as he moved ahead in 24 minutes.

Two breaks of the German's serve saw Federer lead 5-0 in no time, and although Gojowczyk finally got on the board it was only delaying the inevitable as the five-time champion served out for a one-set lead.

Gojowczyk was immediately under pressure at the start of the second but he saved four break points and briefly led 3-1 after taking a service game off his illustrious opponent.

It was less of a procession for Federer as Gojowczyk began to play with freedom from the baseline, his groundstrokes piercing through his opponent's defences as regularly as they flew long.

Federer quickly got back on serve and eventually applied pressure in the 11th game, it proved too much for Gojowczyk as he fired into the net before double faulting.

There was no way back for the world number 85 as a wayward forehand confirmed Federer's place in round three.

Stan Wawrinka got back to winnings ways by defeating Benoit Paire in straight sets in the first round of the Rotterdam Open on Monday.

Former world number three Wawrinka, yet to return to his previous heights after serious knee injuries, staved off three set points before clinching a tie-break and he reeled off six games in succession to complete a 7-6 (7-4) 6-1 triumph.

The victory represented the Swiss' first since the opening round of the Australian Open, having suffered back-to-back defeats against Milos Raonic – who he could face in the second round in Netherlands – and Marius Copil.

Paire was unable to convert a break point while leading 5-3 in the first set and he passed up two opportunities to serve it out, and Wawrinka made sure to punish him by claiming the tie-break and racing to victory.

"It was difficult to play against a good friend and we played some good shots. Winning the first set was the key and I played with confidence in the second set," said the 2015 champion Wawrinka.

"I feel good in general. I had a good off-season and took the time to get back in shape. I now need matches to build my confidence, but I have to be patient with that. It was a long year to get back physically, but now I'm playing well."

Hyeon Chung was unable to make the most of winning the first set as he fell to a 4-6 7-6 (7-1) 6-2 defeat against Nikoloz Basilashvili.

Andreas Seppi also required three sets to see off qualifier Peter Gojowczyk 7-6 (7-3) 3-6 6-2, while Mikhail Kukushkin eliminated home hope Robin Haase 6-2 7-6 (7-4).

Peter Gojowczyk produced the first upset in the main draw at the Shanghai Masters as Jeremy Chardy booked a clash with Novak Djokovic in Sunday's action.

Feliciano Lopez saved three match points in a first-round defeat of Borna Coric at the China Open and Daniil Medvedev saw off Diego Schwartzman on day one of the Japan Open Tennis Championships. 

Taro Daniel caused the biggest upset at the Winston-Salem Open on Wednesday, the Japanese recovering from a set down to knock out Sam Querrey, before beating Dominik Koepfer on the same day to reach the quarter-finals.

Kyle Edmund, Hyeon Chung and Steve Johnson advanced to the third round of the Winston-Salem Open as rain curtailed play on Tuesday. 

Roger Federer made a winning return to action at the Cincinnati Masters on Tuesday, as Nick Kyrgios survived an amusing equipment problem and Rogers Cup revelation Stefanos Tsitsipas fell at the first hurdle. 

Roger Federer made a confident start in his bid to claim an eighth Cincinnati Masters title, the Swiss brushing aside Peter Gojowczyk in straight sets on Tuesday.

Milos Raonic cruised into the second round of the Rogers Cup in Toronto on Monday, as qualifier Bradley Klahn upset David Ferrer.

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