The Swiss nice transformed 4 of his 10 break factors to finish a two-match dropping streak and begin his grass-court season with a win.
Federer hadn’t performed since March, when he misplaced to Thanasi Kokkinakis and Juan Martin del Potro in Miami and Indian Wells, respectively. He skipped the complete clay-court season for the second 12 months in a row.
Zverev had by no means received a set towards Federer of their 5 earlier conferences, however he took the primary earlier than the second-ranked Swiss upped his recreation and broke the German twice to pressure the decider.
Indian qualifier Gunneswaran upset sixth-seeded Denis Shapovalov of Canada 7-6 (6), 2-6, 6-Three of their first-round match.