Maligned as mentally frail, Alexander Zverev has morphed into a physical grand slam goliath in a concerted bid to finally capture tennis's greatest prizes ... and conditioner to return to the peak ...

"So in that regard, I still played tennis, right ... the final sets at Roland Garros, Zverev reunited with trainer Jez Green in the off-season to build the fitness needed to compete with Alcaraz ...

Alexander Zverev's girlfriend Sophia Thomalla recently shared a gym mirror selfie from Argentina where her boyfriend is set to make his debut in the ATP 250 event.

Nobody in men's tennis has an answer ... to even things up and test Sinner's fitness and nerve over a marathon match. But serving at 4-4 in the tiebreak, Zverev suffered a stroke of bad luck ...

The Serbian tennis player could no longer endure ... However, he admitted uncertainty about his fitness for the clash against Zverev. Concerns escalated on Thursday when Djokovic canceled his ...