The 152nd-ranked Coric had a week of tennis he will never forget, defeating five straight top-20 opponents in Rafael Nadal, Roberto Bautista-Agut, Felix Auger-Aliassime, Cameron Norrie, and lastly Stefanos Tsitsipas, according to DPA.
The 28-year-old former world No.4 will surge back into the Top-20 on Monday after a week that saw her win eight matches in nine days, defeat three top-10 opponents, and overcame Kvitova to win her 10th career title, third of the season, and first WTA 1000 since 2017.
Jabeur has lost to Kvitova four times, including a 6-1, 6-2 victory in Cincinnati the year before.
Halep was set to face Veronika Kudermetova in the second round. Kudermetova received a walkover into the Round of 16 and will face either Paula Badosa or Ajla Tomljanovic.
Nadal's defeat ends his bid for a return to the top spot in the ATP Rankings this week. The World No. 3 will have another chance to leapfrog Alexander Zverev and Daniil Medvedev at the US Open.
The Russian youngster defeated Federer in straight sets- 6-3, 6-4 in a match that was concluded in just a little over an hour.
Nadal announced that he will not participate in this competition only after a few hours he had won his fifth ATP Montreal title 6-3, 6-0 against Russian Daniil Medvedev.
With Nadal missing this year's tournament, Djokovic is now expected to form a partnership with Federer.
"He's a great champion," said Federer in praise of Djokovic in Cincinnati.
Cincinnati remains the only one of the nine Masters 1000 events that the Serb star hasn't won.
