China's Li Haotong leads at halfway point on -8
England's Tommy Fleetwood and Justin Rose are two behind on -6
Compatriot Paul Casey is also in the mix on -5
United States' Brooks Koepka aims for third straight title
TPC Harding Park in San Francisco hosts rescheduled tournament from 6-9 August
No spectators allowed due to Covid-19 restrictions
Listen to 5 Live Sports Extra commentary from 20:00 BST
Tiger Woods (-1) pops one up from a flat-lying bunker - a man of his talents perhaps should have landed that within two feet on the fourth hole.
Justin Thomas (+1) has an eagle chance, but his effort from just off the green is about two feet short. Easy birdie.
The projected cut is now at one over which is good news for Bubba Watson, Phil Mickelson and Ian Poulter.
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Mark Swain: Rory McIlroy, Justin Thomas, Henrik Stenson, Francesco Molinari, Phil Mickelson. How did I do?
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BBC Radio 5 Live Sports Extra
Ten men spent the entirety of the 2010s in the top 100 - from 1 January 2010 to 31 December 2019 - who are they?
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The wind is really picking up at Harding Park - we might not get those low scores we were expecting from the late crew.
Paul Casey has just spoken after shooting a three-under 67 to move to five under after the opening two rounds.
“Through 36 I’m very happy," he said. "I’ve missed the fans and I’m slowly getting the energy back so the last two days have been great fun.
"I've got John McLaren back on the bag and he brings so much to my game, but I’ve struggled with the lack of fans. I’ve found it strange standing on the first tee not being nervous. I know it has to be like this because of the pandemic but I wish they were out here."
Xander Schauffele's GPS must be feeding off four satellites - his long iron-shot sees the ball land within three feet of the sixth hole.
He makes his birdie and moves to six under - two off the lead.
Anthony Wall
Two-time European Tour winner on BBC Radio 5 Live Sports Extra
After Rory McIlroy drops a shot at the third:
"The one thing I'd be worried about is his first three iron shots of the day, he's missed two of them right of the green.
"It is a strange one, but he's under the gun. It's difficult playing at a major when you're aiming at a pin that's short-side. The pressure is on you to hit the green and you have to deliver"
Unlucky for Rory McIlroy who drops back to evens. The Northern Irishman had it all to do after his shot to the third green found the bank on the right. The escape was followed by a brilliant putt which was well judged, but lacked the necessary pace.
Tiger Woods misjudges another putt - it runs straight, no break and also a bogey.
The American is back at one under.
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Mr Cole: Top 100 for the last decade... Mickelson, Rose, DJ, Garcia, Westwood, McIlroy, Day, Bubba for certain. Torn between Fowler (too young?) or the ever presents (like Kuchar, Molinari, Oosthuizen, Scott)
Brooks Koepka makes his birdie - of course he was going to make the birdie.
World number 11 Xander Schauffele, one of those tipped to win, has a birdie chance on five, but just comes up short. He taps in for par to remain on five under.
There are six players currently on five under.
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BBC Radio 5 Live Sports Extra
Just a reminder of tonight's teaser being mulled over by our pals on BBC Radio 5 Live Sports Extra...
Ten men spent the entirety of the 2010s in the top 100 - from 1 January 2010 to 31 December 2019 - who are they?
Post your answers using #bbcgolf, external
Defending champion Brooks Koepka - looking for his third successive US PGA win - attacks the green from 290-ish yards on the par-five fourth which stretches 607 yards. The ball bounces out of the flat bunker and finds the ridge on the right.
Eventual birdie chance.
An excellent potential par save for McIlroy on the second following a good putt to within a few feet - his play to the large green left him with a lot to do.
That fluffed tap-in by Rickie Fowler earlier cost him more than just one shot, it could end his run of making the cut at 14 consecutive majors. A one-under 69 today nudged the American to two over. That may not be enough to still be around this weekend.
Make that seven under for Day - outright second.
It seems to matter little if you find the rough here at Harding Park -Jason Day plays a beauty of an approach from what seemed an awkward lie on the par-four fifth.
The Australian, who won in 2015, is on six under - two off the lead.
Image source, Rex FeaturesIt was a white cardy for Tommy Fleetwood yesterday, navy today.
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Zach Johnson three putts the par three third - poor from the former Masters and Open champion.
The American drops down to three under.
He was nowhere near that - it was only about four or five feet and didn't break.
He stays at two under.
Rory McIlroy makes his though to move to one under. If he gets on a run...