THE two ATP 500 events in Dubai and Acapulco provided some surprising upsets, as well as some come-from-behind wins as we recap the day’s action.
The top two remaining seeds continued their straight-sets run into the semi-finals, joining the two surprise packets in the semi-finals of the 2021 ATP Dubai Tennis Championships. Second seed Andrey Rublev and third seed Denis Shapovalov continued their dominant form to reach the final four, while Russian wildcard Aslan Karatsev and South African qualifier Lloyd Harris continued their respective runs into the semis.
The top ranked Rublev has been near unbeatable at ATP 500 level of late, and his consecutive run – which includes three titles – extended to 23. He defeated Hungarian Marton Fucsovics in straight sets 7-5 6-2, repeating the effort from their head-to-head at the most recent ATP 500 event in Rotterdam. The second seed will now lock horns with compatriot Karatsev who paved his way through to the semis with a come-from-behind win over young gun Jannik Sinner.
“I have really great connection with Marton and we are good friends on Tour. I have a huge respect for him. All the matches that we’ve played each other were drama matches,” Rublev said post-match. “We just smiled because we always have tough matches against each other. It’s not easy to play each other. “It’s always long rallies, it’s always tough points and in the end we just smiled.”
Karatsev dropped the first set to the Italian 16th seed in a tiebreaker 7-5, but found his groove in the final two sets to win 6-7 6-3 6-2 in the longest match of the day at two hours and 29 minutes. Sinner served up 10 aces against the Australian Open semi-finalist, but Karatsev was more consistent upon return, breaking five times to two and winning 79 and 50 per cent of his first and second serve points.
“It was tough at the beginning as he is a really talented guy,” Karatsev said post-match. “In the tie-break I was a little unlucky. I felt more comfortable in the second set and knew how to play against him.”
Meanwhile third seed Shapovalov was able to get past Frenchman Jeremy Chardy in another quarter final, defeating his opponent 7-5 6-4. The Canadian has also not dropped a set in Dubai and was able to book a date with Harris in the semi-finals following the big-serving South African’s victory over Kei Nishikori. It is Harris’ second win over a Grand Slam champion, having defeated Dominic Thiem in the Round of 32. This time he had to fight all the way in three sets, defeating the Japanese veteran, 6-1 3-6 6-3.
“It was a tough match as Jeremy was serving and playing well,” Shapovalov said post-match. “I am really happy that I was able to convert the break points. It helps to play three straight sets matches and I feel fresh and ready to go.”
Karatsev has shuffled up four places in the ATP Tour world rankings, going above both Nishikori and Fucsovics into number 38 in the world, while Harris is now also at a career-high of 64th following a 17-spot rise. Rublev is slowly closing the gap on the Top 7, while Shapovalov has leapfrogged Roberto Bautista Agut who fell in the Round of 16 at Acapulco.
DUBAI TENNIS CHAMPIONSHIPS QUARTER FINALS RESULTS:
 Andrey Rublev (RUS) defeated Marton Fucsovics (HUN) 7-5 6-2
 Denis Shapovalov (CAN) defeated Jeremy Chardy (FRA) 7-5 6-4
[WC] Aslan Karatsev (RUS) defeated  Jannik Sinner (ITA) 6-7 6-3 6-2
[Q] Lloyd Harris (RSA) defeated Kei Nishikori (JPN) 6-1 3-6 6-3
Five of the seven seeds in the Abierto Mexicano ATP 500 event made their way through to the last eight in what was largely a one-sided day of action. Six of the eight matches were done in just two sets, with no more than 19 games played in each of those. The two three-set matches featured the remaining qualifiers with the results going both ways.
Italian teenager Lorenzo Musetti booked his spot in the quarter finals with a come-from-behind win over United States’ Frances Tiafoe 2-6 6-3 7-6, including a dominant 7-1 final set tiebreaker. He joined eighth seed Casper Ruud in there who had a similarly tough time shaking off Dutch qualifier Tallon Griekspoor in three sets, 4-6 6-3 7-6. Ruud won the deciding tiebreaker 7-3 in a match that lasted two hours and 23 minutes, which was 21 minutes less than the Musetti-Tiafoe clash.
All the other results were straightforward, though not always as you would expect, with German Dominik Koepfer and Brit Cameron Norrie being two other unseeded players to reach the Acapulco quarter finals. Koepfer upset fourth seed Canadian Milos Raonic 6-4 6-2, while Norrie took down Italian sixth seed Fabio Fognini, 6-4 6-3. It was better news for another Canadian in seventh seed Felix Auger-Aliassime who defeated United States’ wildcard Sebastian Korda 6-3 6-4.
Korda joined John Isner on the list of outs, following the big-serving American’s demise at the hands of top seed Stefanos Tsitsipas. The Greek talent won 6-3 6-2 to breeze through to the last eight, as did second seed Alexander Zverev and fifth seed Grigor Dimitov. The pair proved too strong for Serbian duo Laslo Djere and Miomir Kecmanovic respectively, defeating them both in straight sets respectively.
The results set up some blockbuster quarter finals, with Tsitsipas and Auger-Aliassime being the pick of the bunch. The other all-seeded quarter final between Ruud and Zverev is highly anticipated, whilst Musetti takes on Dimitrov, and Norrie faces Koepfer.
ABIERTO MEXICANO ROUND OF 16 RESULTS:
 Stefanos Tsitsipas (GRE) defeated John Isner (USA) 6-3 6-2
 Alexander Zverev (GER) defeated Laslo Djere (SRB) 6-4 6-3
Dominik Koepfer (GER) defeated  Milos Raonic (CAN) 6-4 6-2
 Grigor Dimitrov (BUL) defeated Miomir Kecmanovic (SRB) 6-4 6-2
Cameron Norrie (GBR) defeated  Fabio Fognini (ITA) 6-4 6-3
 Felix Auger-Aliassime (CAN) defeated [WC] Sebastian Korda (USA) 6-3 6-4
 Casper Ruud (NOR) defeated [Q] Tallon Griekspoor (NED) 4-6 6-3 7-6
[Q] Lorenzo Musetti (ITA) defeated Frances Tiafoe (USA) 2-6 6-3 7-6