Aryna Sabalenka outlasted second seed Ons Jabeur 3-6 7-6 (5) 7-5 over almost two-and-a-half hours on the opening night of round-robin play at the WTA Finals.
The seventh seed battled back when down 5-3 in the second set tiebreak and again while at 5-2 in the third set to defeat Wimbledon and US Open finalist Jabeur, who was on debut at the tournament in Fort Worth, Texas.
