Matteo Berrettini upsets Novak Djokovic in Doha opener
Italian Matteo Berrettini upset third-seeded Novak Djokovic 7-6 (4), 6-2 in the first round of the Qatar ExxonMobil Open in Doha on Tuesday.,It was thItalian Matteo Berrettini upset third-seeded Novak Djokovic 7-6 (4), 6-2 in the first round of the Qatar ExxonMobil Open in Doha on Tuesday.,It was th