Andy Murray finished the 2016 season playing nearly every week to secure the No. 1 ranking for the first time.
After shutting down his season midway through last year because of a hip injury, his presence around tennis has been far more rare. On Monday, the 382nd-ranked Murray played a Grand Slam match for the first time in more than a year, beating 448th-ranked James Duckworth, 6-7 (5), 6-3, 7-5, 6-3.
Assuming the others play, as expected, Murray’s presence will make this the first tournament since Wimbledon last year to include all of the Big Four — Murray, Rafael Nadal, Roger Federer and Novak Djokovic.