(Tennis news) Rafael Nadal extended his unbeaten run to 12 matches as he defeated Stefan Kozlov 6-0 6-3 to progress into the quarterfinals of the Mexico Open. It has been the Spaniard’s best start to a season since 2014 when he was unbeaten for 11 games before falling to Stan Wawrinka in the finals of the Australian Open. 

The 35 year old will be facing Tommy Paul for a place in the semifinals of the tournament after which he could potentially face world number 2 Daniil Medvedev who he defeated in the finals at Melbourne in January. Speaking after his 76 minute match against Kozlov, Nadal said “It's always important to win as quick as possible but the most important thing is to win. Tonight has been straight sets – that's great news, and I'll try to be ready for tomorrow against a tough opponent." 

Meanwhile, Russia’s Daniil Medvedev defeated Spain's Pablo Andujar 6-1 6-2 in just 64 minutes to progress into the quarterfinals. Medvedev will face Yoshihito Nishioka in the next match and will aim to win the tournament and progress to the top spot in the world rankings at the expense of Novak Djokovic by winning the title. 

Britain’s Cameron Norrie was also one of the victors as he defeated America’s John Isner 6-7 (2-7) 6-3 6-4. Norrie will face Germany's Peter Gojowczyk in the quarterfinals. World number four Stefanos Tsitsipas defeated American qualifier JJ Wolf 6-1 6-0 in just 47 minutes to progress into the quarterfinals where he will face America’s Marcos Giron. 

One of the controversial moments from the tournament has been when world number three Alexander Zverev was thrown out of the Mexico Open due to ‘unsportsmanlike conduct’ when the German attacked the umpire’s chair at the end of a doubles match. A statement released by the ATP said “Due to unsportsmanlike conduct at the conclusion of his doubles match on Tuesday night, Alexander Zverev has been withdrawn from the tournament in Acapulco”. 

As a result, Zverev’s opponent Peter Gojowczyk will be given a walkover in the third round. The 24 year old German took to Instagram to apologise for his actions, calling his behaviour “unacceptable”. Zverev said he had "privately apologised" to umpire Alessandro Germani and that he was “disappointed in myself”. He wrote “As you know, I leave everything on the court. Yesterday, I left too much. I am going to take the coming days to reflect – on my actions and how I can ensure that it will not happen again." 

Also read: Ostapenko sets up rematch with Krejcikova at Doha, Kvitova issues walkover