Steve Flesch was 2-under through five holes, and moved into a tie for fifth at 1 over on Saturday when thunderstorms forced suspension of play for the day at the PGA Championship.
Mickelson was even par through the same stretch and remained at 3 over, four shots behind second-round leader J.B. Holmes.
"I don't know if either one of us has a lot to be proud of today," Flesch said. "I think both of us will be looking to get some momentum in the morning, hoping it will carry us through on what's going to be a long day."
The suspension meant the two left-handers faced 31 holes today.
Mickelson is in the midst of his longest stretch with one top-10 finish at a major, going nine starts with only a tie for fifth in April at the Masters Tournament.
"Lefty" shed the label of being the best player without a major championship in 2004 at Augusta, won the PGA Championship in 2005 and earned another green jacket in 2006.
Mickelson was tied for 18th and 19th in the U.S. Open and British Open, respectively, this year. He missed two cuts at majors last season, finishing no better than 24th, and finished outside of the top 15 in the final two majors of 2006.
Tough track: U.S. Ryder Cup captain Paul Azinger played in the PGA Championship, so he knows how difficult it is to play Oakland Hills.
"It's the hardest course I've ever played," Azinger said after his third-round 76 left him at 14-over 224.
That speaks volumes considering the source, who is playing in his 66th major and has competed in five Ryder Cups and two Presidents Cups.
KILLIN' TIME: While play was suspended for more than four hours, players found anything they could to wait out the weather.
Tom Lehman, who got in seven holes before play was called, said he tried a little bit of everything.
"I spent a lot of time in the fitness trailer; I've got an elbow issue," he said.
"So I was warming it up and then I'd go practice, then re-warming it up and then going to practice again. And I was eating, and watching the Olympics, and talking and taking a nap - I just kind of covered all the bases."
U.S. PRIDE: If an international player wins the PGA Championship, it will be the first time Americans didn't win at least half of the majors since 1994.