FIRST ROUND LEADERBOARD
Rose has been out of action since the Masters
GB & Ire unless stated
P Broadhurst, J Rose
-5 M Fraser (Aus), S Kapur (Ind), S Khan, F Molinari (Ita)
-4 A Canizares (Spa), E Els (SA), M Ilonen (Fin), J Randhawa (Ind), R Sterne (SA), Y Yang (Kor)
English pair Paul Broadhurst and Justin Rose shared the lead on day one of the PGA Championship at Wentworth after shooting six-under-par 66s.
Rose was making his first appearance in England for three years and marked the occasion with eight birdies, including five in the first eight holes.
England's Simon Khan was one of four players another shot back, while Ernie Els stayed in contention at four under.
Els, who designed the course, hit eight birdies, two bogeys and a double bogey.
The South African is a six-time winner of the World Match Play at Wentworth but has never won the PGA Championship on the same course.
"I was trying to get to two under, so I did a couple better and could have been even better," he said.
"I almost feel like I'm hosting the tournament. You are always going to get criticism, but most of the comments have been positive and I can listen to criticism as long as it's constructive."
Rose was making his first appearance since his fifth-place finish at the Masters and admitted he was concerned that his lack of recent action would be a problem.
"Going out today I didn't know whether being fresh would be in my favour or being rusty would work against me," said Rose.
"I guess being fresh won the day, although on the back nine I was struggling with my concentration a bit."
Ireland's Padraig Harrington and England's Nick Dougherty shot rounds of 69 to stay in the frame at three under, while Westwood and Luke Donald both returned one-under-par 71s.
That's definitely my best round at Wentworth
Former Ryder Cup player Broadhurst, without a top-10 finish all season, made the most of the ideal early conditions by carding five birdies in the first eight holes.
He bogeyed the ninth, but further birdies came on the 11th and long 17th.
"That's definitely my best round here," said Broadhurst. "I've been struggling and searching for answers, so I forget about technique and just tried to score."
Argentina's Angel Cabrera, the 2005 champion, is two under, alongside Spain's Jose Maria Olazabal.
Darren Clarke, back in action after pulling out of two events in America and then withdrawing from last week's Irish Open because of a hamstring strain, returned a level-par 72.
Prior to that he missed four halfway cuts in a row and, with his world ranking slumping to 87, he needs a top-two finish to avoid having to qualify for next month's US Open.
Three-time PGA champion Colin Montgomerie is at two under, but his playing partner Retief Goosen had a nightmare triple-bogey eight on the 17th for a 76.
Paul Casey ended on one over after a quadruple bogey nine at the 12th ruined his scorecard.