Roger Federer defeated Milos Raonic 6-4, 7-6 (3) to mark his return from three months off with the Stuttgart Open title on Sunday.
The Swiss great, who is assured of reclaiming the No. 1 ranking from Rafael Nadal on Monday, broke at 1-1 in the opening set and held his nerve in the second, where Raonic double-faulted.
Federer skipped the entire clay-court season for the second year in a row, but he wrapped up his 18th grass-court title in 1 hour and 18 minutes - his 98th title overall and third of the season after victories at the Australian Open and World Tennis Tournament in Rotterdam.
"It's a wonderful feeling. I fought hard. When you finally manage it, the joy is even greater," said Federer, who extended his grass-court winning streak to 16 matches including his titles at Halle and Wimbledon last year.
The 36-year-old will need to defend his title at Halle to maintain his No. 1 spot ahead of Wimbledon.