Sloane Stephens won a 7-6 (5), 6-1 match on Saturday afternoon over Latvia's Jelena Ostapenko, who maintained her fifth position in the rankings, in the Miami Open final,
The equality was maintained until the tenth point, when the German, again with his left hand, broke the serve of the Spanish, and later took the tie-break by 7-4.
Del Potro continued his run at the Masters event as he overcame a 1-4 deficit to defeat No. 22 seed Filip Krajinovic of Serbia 6-4, 6-2 for his 14th consecutive victory.
It was a match full of shifts in momentum, with seven service breaks in the first four games, although none of them ultimately worked to Sakkari's advantage.