MONTREAL, QC - AUGUST 07: Cristian Garin of Chile serves against John Isner of the United States during day 6 of the Rogers Cup at IGA Stadium on August 7, 2019 in Montreal, Quebec, Canada. (Photo by Minas Panagiotakis/Getty Images)
MONTREAL, QC - AUGUST 07: Cristian Garin of Chile serves against John Isner of the United States during day 6 of the Rogers Cup at IGA Stadium on August 7, 2019 in Montreal, Quebec, Canada. (Photo by Minas Panagiotakis/Getty Images)