THERE was plenty to unpack in the ATP Tour over the past 24 hours with some massive upsets in Dubai, and the Abierto Mexicano kicked off in Acapulco.
In Dubai, Lloyd Harris has caused the upset of the day with a straight sets win over top seed Dominic Thiem. The US Open reigning champion automatically booked his spot in the Round of 32 due to his seeding, but lasted just 72 minutes on court as the South African server won 6-3 6-4. Harris broke twice without facing a break point, and only lost one point on his first serve to be near-impenetrable off his racket. Thiem still won 81 per cent of his first serve points, but only served at 51 per cent efficiency in a disappointing performance from the Austrian.
“I’m super, super happy with that win. [He is] by far the highest-ranked player I have beaten,” Harris said post-match. “I look up to Domi a lot so, for me, it is a special feeling. “I am really happy. “Just the fact that I am playing good tennis, match in, match out now is giving me a lot of confidence.”
Thiem was not the only seed to bow out, with fifth seed Belgian David Goffin and sixth seed Spaniard Pablo Carreno Busta also losing. Goffin went down to Kei Nishikori, with the Japanese Grand Slam winner continuing to build since returning from injury, posting a tight 6-3 7-6 victory over the seed. Meanwhile, Rotterdam finalist Marton Fucsovics posted a come-from-behind win over Carreno Busta, dropping the first set in a tiebreaker before winning 6-7 6-3 6-2.
Lower down the seeded order, 12th seed Brit Daniel Evans lost at the hands of reborn Australian Open semi-finalist Aslan Karatsev, with the Russian wildcard winning in three sets, 6-4 4-6 6-4 to move through to the Round of 16. The only other unseeded player to make his way through to the third round was Slovenian Aljaz Bedene who took care of Italian lucky loser Lorenzo Giustino in straight sets.
It was a lot easier going for top talents, Andrey Rublev and Denis Shapovalov who accounted for Finnish qualifier Emil Ruusuvuori and German Jan-Lennard Stuff in straight sets. The second and third seeds were joined by fourth seed Roberto Bautista Agut in the third round, who won after Australian Matthew Ebden retired at 4-1 down in the first set. Also through to the next round was Russian eighth seed Karen Khachanov, who defeated the last remaining Australian in wildcard Alexei Popyrin, 6-4 3-6 7-6.
Dusan Lajovic, Hubert Hurkacz, Taylor Fritz, Jannik Sinner and Lorenzo Sonego were the other seeds through to the Round of 16, setting up some tantalising matches for the next day’s play. Harris will face Krajinovic, Fritz waill face Rublev, Sinner will take on Bautista Agut and Shapovalov will face Hurkacz in the games to watch, while the other four matches see Bedene facing Nishikori, Sonego locking horns with Karatsev, Fucsovics taking on Lajovic, and Frenchman Jeremy Chardy up against Khachanov.
DUBAI TENNIS CHAMPIONSHIPS ROUND OF 32 RESULTS:
[Q] Lloyd Harris (RSA) defeated  Dominic Thiem (AUT) 6-3 6-4
 Andrey Rublev (RUS) defeated [Q] Emil Ruusuvuori (FIN) 6-4 6-4
 Denis Shapovalov (CAN) defeated Jan-Lennard Struff (GER) 6-1 6-3
 Roberto Bautista Agut (ESP) defeated [SE] Matthew Ebden (AUS) 4-1 RET
Kei Nishikori (JPN) defeated  David Goffin (BEL) 6-3 7-6
Marton Fucsovics (HUN) defeated  Pablo Carreno Busta (ESP) 6-7 6-3 6-2
 Karen Khachanov (RUS) defeated [WC] Alexei Popyrin (AUS) 6-4 3-6 7-6
 Dusan Lajovic (CRO) defeated [WC] Malek Jaziri (TUN) 7-5 6-2
[WC] Aslan Karatsev (RUS) defeated  Daniel Evans (GBR) 6-4 4-6 6-4
 Hubert Hurkacz (POL) defeated Richard Gasquet (FRA) 6-3 6-4
 FIlip Krajinovic (SRB) defeated Alejandro Davidovich Fokina (ESP) 7-5 6-4
 Taylor Fritz (USA) defeated Nikoloz Basilashvili (GEO) 4-6 6-3 7-6
 Jannik Sinner (ITA) defeated Alexander Bublik (KAZ) 2-6 7-6 6-4
 Lorenzo Sonego (ITA) defeated [Q] Bernabe Zapata Miralles (ESP) 6-2 6-2
Aljaz Bedene (SLO) defeated [LL] Lorenzo Giustino (ITA) 6-4 6-3
It was a mixed bag for Americans in Mexico, with four United States, one Canadian and one Mexican out on court in a day of straight sets action. Whilst there were some anticipated Round of 32 matches to open the Abierto Mexicano, no match really lived up to too much bar seventh seed Felix Auger-Aliassime‘s victory over Tennys Sandgren. The young gun won 6-3 7-6 to advance through to the second round, the closest of the six encounters on the day.
United States’ Sebastian Korda also had a tight first set before impressively shaking off Croatian Marin Cilic 7-5 6-2, joining compatriot John Isner in the second round. The big serving American took care of Italian Salvatore Caruso in straight sets, 6-4 6-3. The news was not as positive for Steve Johnson, who bowed out 6-2 6-3 to Serbian Laslo Djere, while German duo Alexander Zverev and Dominik Koepfer both advanced through to the Round of 16.
The second seed Zverev won 6-3 6-1 against Spanish teenage talent Carlos Alcaraz, while Koepfer booked his spot in the second round with a 6-4 6-2 victory over local wildcard, Gerardo Lopez Villasenor. A massive day of action will see the other six seeds in action, with number one seed Stefanos Tsitsipas facing Frenchman Benoit Paire, third seed Diego Schwartzman up against Italian young gun qualifier Lorenzo Musetti, Adrian Mannarino trying to take down fifth seed Grigor Dimitrov, and Tommy Paul up against fourth seed Milos Raonic.
ABIERTO MEXICANO ROUND OF 32 RESULTS:
 Alexander Zverev (GER) defeated [WC] Carlos Alcaraz (ESP) 6-3 6-1
 Felix Auger-Aliassime (CAN) defeated Tennys Sandgren (USA) 6-3 7-6
[WC] Sebastian Korda (USA) defeated Marin Cilic CRO) 7-5 6-2
Laslo Djere (SR) defeated Steve Johnson (USA) 6-2 6-3
John Isner (USA) defeated Salvatore Caruso (ITA) 6-4 6-3
Dominik Koepfer (GER) defeated [WC] Gerardo Lopez Villasenor (MEX) 6-4 6-2
Picture credit: ATP Tour