Karen Khachanov thrilled the Moscow crowd as he saved five match points before overcoming veteran Philipp Kohlschreiber at the Kremlin Cup.

The world number eight, top seed and defending champion at the ATP 250 event, found himself 5-3 down in the decider but refused to buckle as Kohlschreiber eyed a notable scalp on his 36th birthday.

Khachanov – now the focus of home hopes after Daniil Medvedev's withdrawal due to fatigue - repelled three match points to force a tie-break and his calmness from the baseline saw him through more trouble to prevail 3-6 6-3 7-6 (9-7).

Andreas Seppi is up next for Khachanov after the experienced Italian similarly came from a set down to beat Roberto Carballes Baena 5-7 6-1 6-3.

Serbian fourth seed Dusan Lajovic also went the distance against Lukas Rosol, coming through 6-4 6-7 (8-6) 6-3 to beat his Czech opponent and set up a quarter-final clash against last year's runner-up Adrian Mannarino – a straight-sets winner over Mikhail Kukushkin.

Stan Wawrinka returned to action at the European Open, competing for the first time since his US Open quarter-final loss, and his troublesome knee was given a thorough workout by Feliciano Lopez.

The two seasoned campaigners provided plenty of entertainment - a sumptuous backhand half-volley at the net in the first set serving as a particular highlight from Wawrinka, who came through 6-7 (4-7) 6-4 7-6 (7-4).

The 34-year-old Swiss will take on Gilles Simon in the quarter-finals after the world number 47 came through his all-French clash against Jo-Wilfried Tsonga 6-4 7-5.

Andy Murray will face Pablo Cuevas in round two after the eighth-seeded Uruguayan beat Hugo Dellien 6-4 6-3, while Guido Pella ensured further South American success by beating Kwon Soon-woo 7-5 7-5 to earn a quarter-final place.

Frances Tiafoe's reward for breaking a three-match losing streak, defeating Yannick Maden, will be a meeting with another German opponent in Jan-Lennard Struff.

At the Stockholm Open, US Open semi-finalist and second seed Grigor Dimitrov was dumped out by Sam Querrey, losing 6-7 (7-9) 6-3 7-6 (7-3). Taylor Fritz was another seed to fall – 7-5 6-4 against Yoshihito Nishioka,

Filip Krajinovic is up next for Nishioka after beating Dan Evans 7-5 2-6 6-3.

Taylor Fritz ended his dismal run of first-round exits with a hard-fought victory over Fernando Verdasco on day one of the Shanghai Masters.

Fritz had not reached the second round of an ATP Tour tournament since he was runner-up in Los Cabos in August but beat Verdasco 7-6 (7-2) 6-7 (5-7) 6-4 on Sunday.

The American, who did manage to beat Dominic Thiem in the Laver Cup last month, saved eight break points and claimed the solitary break of the deciding set to progress.

Fritz faces a tough second-round assignment against seventh seed Karen Khachanov in the Chinese capital.

Nikoloz Basilashvili, the only seed in action, was also taken the distance as he sent Radu Albot packing 4-6 6-1 6-3.

Hubert Hurkacz defeated wildcard Zhang Zhizhen 7-6 (7-5) 6-4, while Joao Sousa was 2-6 6-4 7-6 (7-5) winner against Filip Krajinovic.

Alexander Zverev stormed back to beat Filip Krajinovic and reach the German Tennis Championships semi-finals after splitting with coach Ivan Lendl, while Andrey Rublev claimed the scalp of Dominic Thiem.

Zverev and Lendl have parted ways less than a year after starting their collaboration ahead of the US Open.

The German could start the post-Lendl era with a second ATP Tour singles title of the season, having come from a set and a break down to beat Krajinovic 2-6 7-5 6-2 in his homeland on Friday.

Krajinovic served for the match at 5-3 up in the second set, but Zverev showed great resistance to pull himself off the ropes, winning four games in a row to level the match before largely dominating the decider.

Second seed Zverev will take on defending champion Nikoloz Basilashvili in the last four after the fourth seed beat Jeremy Chardy 6-2 6-3 in Hamburg.

Former World No. 1 Ivan Lendl and Alexander Zverev have parted company after a partnership that included a run to the 2018 #NittoATPFinals. #ATP

— ATP Tour (@ATP_Tour) July 26, 2019

Top seed Thiem's titles hopes were ended with a 7-6 (7-3) 7-6 (7-5) loss to 21-year-old Russian Rublev, who will face Pablo Carreno Busta - a 3-6 6-2 7-6 (7-4) conqueror of Fabio Fognini.

Carreno Busta's fellow Spaniard Roberto Bautista Agut was knocked out of the Swiss Open Gstaad by Joao Sousa, a 4-6 6-3 7-5 quarter-final winner.

Pablo Andujar and Albert Ramos Vinolas continue to fly the flag for Spain in Switzerland, though, and will meet at the semi-final stage following defeats of Dusan Lajovic and Roberto Carballes Baena respectively.

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