It is a case of wait and see for Serena Williams as she battles a shoulder injury at the U.S. Open.
The world No. 1 has been nursing the injury since winning Wimbledon, but her quest for a 23rd grand slam tournament win got off to a perfect start Tuesday when she coasted into the second round past Ekaterina Makarova in straight sets.
Looking calm, cool and collected — and, most importantly, pain-free — Williams recorded a 6-3, 6-3 victory in the opening round at Flushing Meadows.
"I feel OK," Williams told reporters after the match.