New Delhi, July 30 -- Top-seeded Alexander Zverev beat Adam Walton 7-6 (6), 6-4 at the National Bank Open on Tuesday night in his first match since Wimbledon.

Zverev is trying to get back on track after reaching the Australian Open final in a strong start to the season. He was upset by Arthur Rinderknech in the first round at Wimbledon, saying afterward he was struggling mentally.

"!'m trying to find ways to kind of get out of this hole. I keep kind of finding myself back in it in a way," Zverev said.

The German is ranked third but seeded No. 1 in this tournament that he won in 2017 after the withdrawals of Jannik Sinner and Carlos Alcaraz. Zverev won a 52-shot rally in the tiebreaker to earn a set point.

"It was a very important mome...