Former champions Maria Sharapova and Venus Williams scored contrasting wins in the first round at Wimbledon on Tuesday.
Sharapova enjoyed a low-key passage after seeing off French qualifier Stephanie Foretz 6-1, 6-4 while Williams overcame a shaky start to record a 7-6, 6-1 victory over British wildcard Naomi Cavaday.
The American was given a tougher than expected workout on Centre Court by the Englishwoman, world-ranked 197, who matched the seventh seed stroke for stroke in the opening set before wilting in the second.
Sharapova, the 2004 winner and third seed, playing her first competitive match on grass this year, took full advantage of some error-strewn hitting from Foretz who is ranked outside the top 100.
Sharapova, 21, broke twice in the opening set and although the bespectacled Foretz proved more resilient in the next, breaking her opponent for the only time, the Russian sauntered to victory without ever producing her best tennis.
Sharapova was a semi-finalist here in 2005 and 2006 and a fourth round loser to eventual champion Venus Williams last year.
It was far from vintage Williams, who has not reached a final in her seven events this year and again declined to hone her game on grass in the lead-up to the tournament.
From 40-0 up on her opening serve Williams was distracted by an insect buzzing around her ankles. She fended it off with an irritated swat but, with her concentration interrupted, Cavaday reeled off five successive points to break.
Cavaday, who came within a whisker of dumping out former world number one Martina Hingis in the first round 12 months ago but spurned two match points, confidently held her first two service games as a clearly rattled Williams struggled to find her rhythm.
Betraying no nerves, the left-handed Cavaday peppered the flanks with raking forehands and double-handed backhands that produced a torrent of clean winners.
Recovering her composure, Williams broke back at the second opportunity in the sixth game when Cavaday tamely netted.
No further breaks sent the opening set into a tiebreak.
Cavaday hit back from 4-2 down to level but a netted backhand handed Williams two set points and although Cavaday saved the first, the American took the set when her opponent again netted from a high-kicking second serve.
Williams raced through the second set in just 21 minutes as Cavaday's consistency unravelled, taking the match with a crisp forehand winner.
Williams is seeking to join a select handful of players -- including Martina Navratilova and Steffi Graf -- who have won at least five singles titles at the citadel of grasscourt tennis.
She next faces Anna Keothavong, the highest-ranked British woman who beat Vania King of the US 4-6, 6-2, 6-3.