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WATCH: Chair umpire Mohamed Lahyani takes medical timeout in Hamburg final | Tennis.com
The Swedish official was treated for a foot injury in the second set of the championship match.
With Alexander Zverev leading Laslo Djere by a set, Lahyani appeared to slip as he came down from his chair for a ball mark inspection early in the second set, and hobbled as he returned to his perch. With the German ahead 4-1, Lahyani summoned the trainer to court to attend to the back of his right foot, as commentators speculated he'd cut his ankle on the step ladder.
"The good news for him is that he doesn't have to go charging around the court now," the booth mused. "He can just rest up up there!"
As a rule, chair umpires are not forbidden to take their own bathroom breaks, for example, during a match. But such interruptions are rare.
You might recall that Lahyani famously officiated the record-setting three-day match between John Isner and Nicolas Mahut at Wimbledon 2010, which stretched to 70-68 in the third set. He later said he was so gripped by the "amazing match" over the three days that his focus never wavered