Alexander Zverev is unsure whether his hamstring injury will affect his grass-court schedule.
The 21-year-old German seemed to experience the injury during his quarterfinal against Dominic Thiem at the French Open, having played three five-setters coming into the encounter. Zverev, who fell in three sets in his first Grand Slam quarterfinal, could not assess the extent of the problem.
Match point from Zverev's loss to Dominic Thiem in the French Open quarterfinals:
"You don't know for two or three days with these types of muscle injuries," he was quoted as saying by German press. "I'm going to go home, definitely not do anything and then look at what it is exactly. I hope it's nothing big."
Zverev is next scheduled to play the grass-court event in Halle, which begins in a little more than a week.
On social media, he said he was aiming to "be back sometime on the grass."
Zverev is No. 3 in the rankings.
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