Quiros birdied the last three holes in a 4-under 67 round at Wentworth, Manassero birdied No. 18 in a 70, and Donald had a 72. They all totaled 6-under 136.
Donald, the overnight leader after a 64 to match his best European Tour round, started with a bogey and hit two more.
Manassero, a two-time European Tour winner in his first year as a professional, also made three bogeys.
David Horsey (68) and Jose Manuel Lara (70) are two shots back. Thomas Aitken is also at 4 under after 17 holes.
Meantime, Ian Poulter is unsure if he will return to play in the BMW PGA Championship in future, describing the Wentworth course as unfair and leaving him “absolutely fuming” at the halfway mark of the tournament.
The West Course was remodeled by Ernie Els in 2007, and Poulter skipped the tournament the following two years due to a dislike of the greens. Further criticism from players in 2010 forced additional changes to be made this year.
Poulter double-bogeyed the last in a 3-over 74 to be level par on Friday, currently five shots off the pace from the incomplete second round.
“I don’t like this golf course, period. End of story,” Poulter said. “We are trying to land it on a dining room table from 230 yards out. You miss your target, yeah, I think it’s a little unfair. I’ve walked off the golf course and I’m absolutely headless, absolutely fuming.
“It’s now turning into a very, very difficult golf course and I’ve got to say, it’s not fun golf.”
Asked if he would play in the event next year, Poulter said: “Who knows? I don’t know what I’m going to do. I’ve got no idea. I’ll speak freely — many others may not.”
Els defended the course as a major championship-style layout.
“Wentworth is now a fair and honest test of golf,” he said. “I can understand people saying things in the heat of the moment. A guy comes off the 18th when he’s just made double and he’s going to be hot.
“I believe you will not find better surfaces to putt on anywhere in the world at the moment, but unfortunately you only hear the negative comments and very little positive. This course is by no means unfair. It was last year, but it is not this. It is a true test of the game.”
Poulter’s criticisms were shared by playing partner Paul Casey of England, who shot a 71 to be 1 over.
“I think (owner) Richard Caring, from what I’ve heard, was perhaps wanting something like level par to win. Well he might get that but does that make it entertaining?” Casey said.
“One of the beautiful things about Wentworth is always the great finish and the fact that guys could finish with maybe four threes (two birdies, two eagles) and shoot up that leaderboard. It’s very, very difficult now.”
Murota shoots 66 at Senior PGA
In Louisville, Kentucky, Japan’s Kiyoshi Murota’s 66 gives him a one-stroke lead over Nick Price and Trevor Dodds after completion of the rain-delayed first round Friday at the Senior PGA Championship.
Murota finished his round on Thursday before half the field was unable to get through 18 holes after weather set the start back and delayed play for more than four hours.
Price, a former British Open and PGA Championship winner, returned to the course Friday to play the second half of his round and ended up with a 67 to join Dodds at that number.
Another shot back at 4-under 68 were former Masters and British Open winner Mark O’Meara, Loren Roberts and Olin Browne.
Hale Irwin, a four-time Senior PGA Championship winner, led a pack at 69 that also included local favorite Kenny Perry.
