The victory also saw Federer become only the second player in the Open Era after American great Jimmy Connors to have won 100 titles. It was their seventh encounter on the Tour (the Czech was the first player to beat Roger Federer at Wimbledon in 1999) and Federer forged a 6-1, 7-6 triumph in an hour and 16 minutes despite serving at record-low 39%!
The last time the two met, Tsitsipas defeated Federer at the Australian Open.
"I'm delighted. It's great to win my eighth here in Dubai and in combination with my 100th singles title.It's been a hard week for me, tough opponents throughout but credit to Stefanos as well, he played a great tournament", Federer said.
Connors ended his career with 109 titles.
A single break in each set backed up by a dominant performance on his own serve was enough for Federer to claim an eighth Dubai title.
"It's been a long, wonderful journey and it all started as a junior world champion", Federer said. One day I will be sitting in front of the TV watching them.
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Anthony Beauvillier, Anders Lee and Valtteri Filppula also scored for the Islanders, who had lost three of their last four. The video produced by the Islanders went on for about a minute, with the sound hardly audible over the screaming fans.
" Tennis is in good hands regardless if I'm there or not". "It was not easy, the conditions were hard and I had tough opponents all the way, right up to Stefanos today", a beaming Federer said.
The Greek will break into the world top ten on Monday when he takes over number four in the ATP rankings.
By beating a player almost half his age in just 69 minutes, the 37-year-old Federer continued his record of winning at least one title every season since his first in 2001 in Milan - when he was 19.
Federer, who clamed a 99th ATP title at his hometown Basel tournament in October, broke Tsitsipas in the first game of the match and saved two break points at 5-4 to claim the first set in 36 minutes.
Tsitsipas was quick to applaud Federer, saying, "I've idolized Roger since I was six, watching him on TV, it's an honour to play him, share the court with him".