Daniil Medvedev has made it into the second round of the Rotterdam Open, but his win over Stan Wawrinka was far from straightforward.
Medvedev is working on his confidence, having suffered a disappointing second round exit at the Australian Open last month.
The Russian fifth seed fell to youngster Learner Tien in five sets in Melbourne, having reached the final the year before.
Medvedev dropped from fifth to seventh in the ATP rankings following the tournament, but is now back to winning ways at the Rotterdam Open.
The second seed was handed a tricky draw against veteran Wawrinka, but managed to battle to a 6-7(8-10), 6-4, 6-1 victory.

Daniil Medvedev calls umpire he has ‘absolutely rubbish’ in Rotterdam Open match vs Stan Wawrinka
Having been one game away from winning the first set, Medvedev produced a typical meltdown at the umpire.
Handed a time violation, the Russian sat in his chair leading 6-5, turning to the umpire and saying: “Why are you giving me a time violation?
“You have some problem. The ball girl didn’t give me the ball. Do you see? Open your eyes. You don’t have eyes man, you’re so bad. I remember with Karen Khachanov. I remember.
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“You remember you don’t have eyes? Why do you give me a time violation? You have a problem. Absolutely rubbish. Absolute rubbish you guys every match.
“I was calm, but you’re searching for trouble man. You have some actual deep problems. I didn’t talk to you, I don’t say anything. And then you act like this… You have some problems.
“Open your eyes. Open your brain. I know you’re just sitting there, but think a little more. Come on, give me energy.”
Daniil Medvedev repeats Australian Open fury at Rotterdam Open
Medvedev has undoubtedly been involved in too many lengthy battles on the court for his own liking in recent times.
Both of his Australian Open matches went to five sets, with Medvedev smashing a net camera in his first round meeting with Kasidit Samrej.
His temper on the court has been well documented over the years, with channelling his emotions perhaps another avenue he needs to explore.
Medvedev was winning the opening set at the time of his latest outburst, only for 39-year-old Wawrinka to come out on top.
Moreover, he definitely isn’t winning himself any fans with the tantrums, with the Russian needing to channel that energy into his game if possible.
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