Novak Djokovic fell to Thiago Agustin Tirante 2-6, 6-4, 6-4 on Saturday in a match that took 2 hours, 44 minutes in hot and humid conditions.
A 25-year-old from Argentina, Tirante is ranked No. 50 in the world. The 39-year-old Djokovic — a three-time Cincinnati Open champion and No. 5 in the rankings — was playing for the first time since his loss to top-ranked Jannik Sinner in the semifinals at Wimbledon.
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