Leylah Fernandez proved her resolve three times over on the way to the DC Open final — in two grueling matches against top-15 players and one against her former doubles partner and good friend, Taylor Townsend.

The biggest tennis title of Leylah Fernandez’s career arrived at the DC Open on Sunday (Monday in Manila) with the help of a terrific backhand, some superb returning — and energy courtesy of Shake Shack’s burgers and fries.