Ons Jabeur celebrates with the trophy after winning her final match against Belinda Bencic in Berlin on Sunday. Reuters

Jabeur was leading 6-3, 2-1 when Belinda Bencic signalled she couldn't continue in the final after hurting her left ankle in a fall in the first set. Jabeur gave Bencic words of comfort at the net, then hurriedly prepared a cooler with ice for the Swiss player to rest her injured ankle.

"I told her, ‘Forget about it, forget about today.’ The most important thing for me is that she's OK,” Jabeur said.

Ons Jabeur (down left) helps to Belinda Bencic after sustaining an injury during the WTA tournament final match in Berlin. AP / Reuters

Jabeur moves to 3-5 in career finals, almost a year to the day since the Tunisian won the Birmingham Classic and became the first Arab woman to lift a WTA singles title. Since then, she has surged up the rankings to become a fixture in the top five and won a notable victory at the Madrid Open last month. Her flag-waving Tunisian fans have been a fixture in Berlin all week and were in full voice Sunday.

Tunisia's Ons Jabeur fans celebrate as she wins her final match against Belinda Bencic. Reuters

Bencic started the match slowly, possibly due to fatigue from her grueling run of four three-set matches this week, but was soon firmly in the contest. She slipped and hurt her ankle chasing a wide serve while at deuce with Jabeur leading 5-3 in the first set. It was in a hard-fought game with four break points for Bencic.

Ons Jabeur celebrates on the podium as injured Belinda Bencic (2nd L) looks on. AFP

Jabeur served out the first set before Bencic, last year's Olympic gold medalist, tried to play on in the second. She was in clear discomfort when serving and retired after Jabeur broke in the third game.

"You deserve this title and I really don't want to take this moment away from you,” Bencic told Jabeur.

Associated Press