German star Alexander Zverev overcame Karen Khachanov in straight sets at the Cincinnati Open here on Thursday, becoming the first player to earn 50 tour-level wins this season.
The 152nd-ranked Coric had a week of tennis he will never forget, defeating five straight top-20 opponents in Rafael Nadal, Roberto Bautista-Agut, Felix Auger-Aliassime, Cameron Norrie, and lastly Stefanos Tsitsipas, according to DPA.
The defending champion of the Rogers Cup cruised to a 6-3 6-4 win over Pella as he recorded his 379th win at ATP Masters 1000 level.
The 32-year-old said he visited doctors in Barcelona on Monday and has subsequently made the decision to play neither the ATP 500 event in Beijing nor the Masters 1000 in Shanghai.
Wawrinka didn't face a break point himself as he advanced to a meeting with Yoshihito Nishioka.
