Alexander Zverev proved Roger Federer right after losing to Taylor Fritz at the Laver Cup. It was a rematch of their recent US Open quarter-final, where the American won in four sets.

Zverev led two sets to one against Carlos Alcaraz before losing ground, enduring another heartbreaking Major campaign. Roger Federer spoke about his former rival ahead of the Laver Cup, citing Alexander's passiveness in his failed Major attempts, especially in the crucial moments.

Zverev has reached two Grand Slam finals and two semifinals but is yet to taste success on the biggest stage - and Roger Federer has told him why.