Bublik made a few underarm serves against Thiem (Domi says 2/3). Thiem confirms it's sometimes a good tactic.
Here is one Bublik made against Kovalik recently on a challenger.
He did it three times against Thiem and won the point two times. There is debate going on as to whether it is a legitimate shot or it is being disrespectful of the opponent. I say it is legitimate shot and is akin to drop shot.
Especially with folks (you know who are these) who stand miles away from the base line to return serve, few underarm serves once in a while would force them to not stand so much behind.
They have never played before. If you take them by skill set, Stefanos is superior, but today so far he made too many UE.Haven't been following the scores of that match at all but before it started I was thinking Krajinovic would win.
Some high risk shots do it for him. He goes for winners, not backing down.Tsitsipas scrapes through.