NEW YORK—Novak Djokovic is assured of extending at least one record of tennis excellence in two weeks' time.
The 36-year-old, who has spent 389 weeks atop the ATP world rankings over the course of his career, clinched a return to the sport's apex with his 6-0, 6-2, 6-3 first-round win over Alexandre Muller at the US Open.
Coupling that achievement with a record-extending 24th Grand Slam singles title is the larger goal, but in a line of work where most players purport to take things "one match at a time," Djokovic's focus on the here and now was rewarded immediately. (Even if that reward is deferred.)