Roger Federer was delighted to find a "good spring in my step" as he cruised into the second round of the Swiss Indoors Basel with a 21st successive victory at the event.

A nine-time winner in his home city, Federer overcame qualifier Peter Gojowczyk with ease in 53 minutes on court, making 34 winners in a 6-2 6-1 triumph.

It was the 1,500th match on the ATP Tour for Federer but he showed no signs of either fatigue or rustiness in a routine win.

"I thought the match was good," he said in quotes published on the ATP Tour's website.

"I felt like I had a good spring in my step and was quick onto the ball. Didn't take me long to get used to the conditions. That was positive.

“[I] knew of the danger playing Peter, especially indoors. He had a great couple of qualifying matches, so I knew he'd be tough, especially [because] he beat [Ivo] Karlovic easy, who serves great."

Elsewhere in Switzerland, eighth seed Benoit Paire was knocked out by wildcard Henri Laaksonen, who won 6-3 7-5, while Jan-Lennard Struff and Alex de Minaur advanced.

Roger Federer dropped just three games against Peter Gojowczyk in his home city as the nine-time Swiss Indoors Basel champion made an emphatic start to this year's tournament.

The 38-year-old recorded his 21st win in a row at the event by dispatching 34 winners in his 52 minutes on court, sealing a 6-2 6-1 success against an overmatched qualifier.

Federer encountered few issues in his 1,500th ATP-tour level match against Gojowczyk, who did manage to break the former world number one in the second set, only to lose the next four games in a row.

Radu Albot or Dusan Lajovic will face Federer in round two, though the draw is tougher for the Swiss thereafter as he could face Stan Wawrinka in the last eight before a potential semi-final with Stefanos Tsitsipas.

Federer was pegged back to deuce before winning the opening game and then saw Gojowczyk hold to love, though the German was broken without claiming a point when he next served.

Gojowczyk was broken again as Federer clinched the opener by overpowering his opponent at the net, and he then moved 2-0 up in the second set.

That was when Federer's reliable serve eluded him as Gojowczyk broke straight back, but it proved to be little more than a blip for his opponent, who won four games on the trot to wrap up a routine win.

Mikhail Kukushkin came through his first-round clash at the St Petersburg Open, but former Moselle Open champion Peter Gojowczyk crashed out in Metz.

There were just two main-draw matches in Russia on Monday, with seeds Kukushkin and Adrian Mannarino progressing.

Kukushkin won the tournament in 2010 for his first and only ATP Tour title to date, and the sixth seed had too much for Jannik Sinner in their opener, advancing 6-3 7-6 (7-4).

Meanwhile, Mannarino, the seventh seed, eased past Stefano Travaglia 7-5 6-2.

At the Moselle Open, however, the one-time winner in action was not able to reach the second round, with Gojowczyk undone by Filip Krajinovic.

Gojowczyk beat Benoit Paire in the 2017 final but went down 7-5 6-4 on Monday.

Fernando Verdasco has struggled for form in recent months - winning twice since Wimbledon - but got the better of Steve Darcis 6-2 6-2, while Frenchman Antoine Hoang defeated Cedrik-Marcel Stebe.

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.

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