London - Maria Shaparova beat Johanna Konta of Britain on Monday to qualify for the second round.
The fourth-seeded Russian, the 2004 Wimbledon champion, won 6-2, 6-2.
Although Sharapova won her first major title on the grass in sothwest London, she has struggled at Wimbledon. In seven of the past eight years, Sharapova has failed to reach the quarterfinals at the All England Club.
Meanwhile John Isner's serve is in fine form to start Wimbledon, where his career winning percentage is now back to 500.
The 17th-seeded American - best known for winning the longest match in tennis history at the All England Club in 2010 - hit 38 aces in a 7-6 (5), 6-4, 6-4 victory over 91st-ranked Go Soeda of Japan in the first round.
Isner collected more than half of his points, 58 of 96, via unreturned serves.
The match only took 1 hour, 45 minutes - a sprint for Isner, who famously edged Nicolas Mahut 70-68 in the fifth set of a first-rounder five years ago that lasted more than 11 hours spread over three days.
Isner never has been past the third round at Wimbledon in six previous trips and is now 6-6 at the grass court Grand Slam tournament.