The 42-year-old from Durban is seeking his first win on the USPGA Tour since 2011 and he is doing it with a problematic back.
"Confidence is definitely there from a perspective of feeling like I can be more aggressive right now", Poulter said.
List took off with three straight birdies on Nos.
Donald, a five-time runner-up in the tournament, produced a valiant response to his damaging, opening 76 as he clawed his way back to one-over par, but missing a birdie putt from five feet at his final hole cost him the chance to play another 36 holes. Sabbatini even got a bonus on his final tee box when he finally got his back to pop after stretching on No. 9 to make himself feel better.
Steve Flesch needed 38 holes Saturday to win the Mitsubishi Electric Classic for his first PGA Tour Champions victory.
However, it was a miserable day for overnight leader Bryson DeChambeau, who slipped down the leaderboard to a tie of 20th after a forgettable four-over 75.
The Englishman enjoyed the excellent early conditions and got his second round off to the ideal start as he rolled in a 15-foot putt for birdie at the 10th.
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According to Nye County, Nevada Sheriff Sharon Wehrly, Bell was found dead Friday in his home in Pahrump, Nevada. Bell's buffs may pause to mull the importance of the getting passed the 13th, of all days.
Klopp: Bournemouth game 'perfect' after Liverpool's European endeavours
The hosts made the ideal start when Sadio Mane followed up his own header to prod the ball past Cherries keeper Asmir Begovic . Liverpool will play Roma in the semi finals of the Champions League as they remain the only English side in the tournament.
DeChambeau struck his second shot past the green and out of bounds by some condos.
"We'll see if we have a last bit of plaid to put in the closet", said a grinning Poulter, referring to the tartan jacket given to the victor at Harbour Town Golf Links.
Three holes later, DeChambeau botched another par 5, the fifth, by rolling his blast from a bunker off the green and into a sprinker cover. This time, he to channel the game that's made him the world's top-ranked golfer for more than a year.
Billy Horschel and C.T. Pan are tied for fourth at 11 under.
Again, Johnson pointed to putter problems this week. He made a 52-foot putt on the par-3 14th and put his approach on No. 18 - the Pete Dye course's signature hole with the lighthouse in the backdrop - to about 7 feet to set up another birdie.
Johnson said the early call will be hard as the winds pick up on what has been an unusually mild layout.