Man I thought I was the only one to notice how Zverev lifts his damn shirt to reveal his abs after every single f*****g point. No dude, I don't want to see your abs at all! What a narcissist...I respect his game but not his antics. The wife beater clothing fits in well with his 70s 'stach and gold chains galore.
He doesn't do it for that. He does it out of habit, and I bet that some of it is linked to just getting directly a bit of air. It is literally impossible that on every point end he thinks "now I am going to show the spectators my abs".
BTW, Zverev's "guns" look just fine. There are two reasons why they wouldn't work as well as someone like Blake or Nadal: He is just so damn tall, that he would literally need to have 40 lbs arms to create the same impression, and that is impossible for a high level tennis player. The other thing is that, due to his huge shoulders, his arms are "hanging" with a separation from his trunk, which makes them look smaller than they are. For example, Nadal has a small chest, so his biceps are a kind of always pressed by his trunk and made more prominent (not to speak that most Nadal pictures given around here are of him hitting the ball or vamoosing himself, which implies a flexed bicep). I have seen Nadal many times up close, and, while he is a muscular type, his arms never look huge as they do on pictures like the ones posted here.
On a separate note, Adidas is not doing a good job of the design of their tank tops for Zverev (and others). The scye is too big and the fit is not athletic enough. They should use their Techfit Sleevless fitted T-shirt, like so:
