Jason Day describes himself as “obsessed” with the new swing he's working on with instructor Chris Como.

Sam Burns now has two PGA Tour titles this year.

Sahith Theegala is one round away from his first PGA Tour title in just his second start of his rookie season.

Will Zalatoris is usually spot-on with his iron.

Sahith Theegala has the lead in the Sanderson Farms Championship with a 64.

Tony Finau tees off on the fourth hole during the first round of the 3M Open golf tournament in Blaine, Minn., Thursday, July 23, 2020. (AP Photo/Andy Clayton- King)BLAINE, Minn. Richy Werenski made a short birdie putt on the par-5 18th for an 8-under 63 and the first-round lead Thursday in the 3M Open, while Dustin Johnson withdrew because of a back injury after a 78. The 24-year-old Werenski is winless in on the PGA Tour and ranked 248th in the world. Johnson, Brooks Koepka, Tommy Fleetwood and Finau were the only entrants in the top 25 of the world ranking. At the end of his first nine, Johnson started the 599-yard, dog-leg 18th hole with a solid drive off the tee.

DUBLIN, Ohio Muirfield Village was supposed to be set up easier for the first of two straight PGA Tour events. Collin Morikawa takes a three-shot lead into the weekend at 13-under 131, one shot away from the 36-hole record at Muirfield Village that Jason Dufner set three years ago at the Memorial. That's the highest score to make the cut since the PGA Tour restarted its season after a three-month shutdown from the COVID-19 pandemic. It's the first time in 63 years the PGA Tour has had consecutive events on the same course. The 31-year-old Daffue is playing only his second PGA Tour event.

And then they tested positive again. Felt like Walter Hagen, just walked straight on to the driving range.The tour last week updated its policy for asymptomatic positive tests, like Cameron Champ. What we have learned along the way is that in some instances, individuals can continue to test positive for weeks beyond when their illness started," he said. McCarthy tested positive on June 26 before the second round at the Travelers Championship, while Frittelli tested positive that weekend. Even so, Frittelli said he could sense a buzz around Muirfield Village from players on edge about someone testing positive still in the field.

(AP Photo/Gerry Broome)Monday marked the 10th day of self-isolation for Nick Watney, the minimum required for PGA Tour players who test positive for the new coronavirus. Harris English tested positive Monday at the Rocket Mortgage Classic in Detroit. Watney laughed at the notion he might be responsible for PGA Tour players all getting a WHOOP strap, which can provide early indications of the virus. Since the positive test, Watney has been in his room. 123 in the FedEx Cup standings, and the positive test cost him at least a month of competition.

Both golfers shot bogey-free rounds, with Todd making five birdies on the front nine and Johnson five on the back. Todd said the round became a game of whatever you can do, I can do just as well. Its hard to miss the leader boards obviously, so (Johnson's) name was up there from a pretty early point, Todd said. Mackenzie Hughes, who led after a 60 on Thursday, shot his second straight 68 for sole possession of fourth place. Nick Watney withdrew just before the second round of last weeks RBC Heritage Championship.

McCarthy became the third PGA Tour player to test positive for the virus since its restart and the second this week, joining Cameron Champ who withdrew on Tuesday. Gordon, a 23-year-old Vanderbilt graduate playing his fourth PGA Tour event on a sponsor's exemption, is 12-under 128 after 36 holes. The Travelers field continued to shrink after Denny McCarthy tested positive for the coronavirus. McCarthy, who shot an opening-round 67, said he began began feeling sick Thursday night and tested positive for the virus on Friday morning. McDowell and Brooks Koepkas caddies both tested positive.

Jim Furyk shot a 12-under 58 on the same par-70 TPC River Highlands course four years ago, the lowest score in a tour event. I kind of joked walking off there that 59 wasn't even the record because of Jim's 58, Hughes said. Phil Mickelson, paired with McIlroy in his first competitive round since turning 50, was one of five players to shoot 64. Patrick Cantlay also shot 60 at TPC River Highlands as an amateur in 2011. The Travelers is the third event on the tour calendar since golf resumed.

Cameron Champ tested positive when he arrived Tuesday and took his mandatory test at TPC River HIghlands. McDowell told Golfweek that his caddie, Ken Comboy, tested positive. The alarm bells have started to ring now that Kenny has failed this test, McDowell told Golfweek. Nick Watney was the first player to test positive, on Friday at the RBC Heritage. He told Golfweek he tested negative at the Travelers Championship on Monday, and he would decide when he reached home whether he should quarantine from his family.

The U.S. Open has been scheduled to end on Father's Day every year since 1976, but it was moved to September this year because of the COVID-19 pandemic. The RBC Heritage filled the spot on the schedule and Simpson, now a father of five, became a winner for the second time this year with a record score at Harbour Town. It was a crazy day, Simpson said. It was a tough runner-up finish for Ancer, trying to become the fifth straight winner of the RBC Heritage to capture his first PGA Tour victory at Harbour Town. Until the first tournament back at Colonial in Fort Worth, Texas, the area around Harbour Town was crowded with the start of summer vacation.

FILE - In this June 21, 2018, file photo, Zach Johnson walks off the 18th green during the first round of the Travelers Championship at TPC River Highlands in Cromwell, Conn. The tournament director for this week's Travelers Championship thought about encircling the 18th green at TPC River Highlands with giant video boards that could be filled with images of fans watching the golf and cheering from home. (John Woike/Hartford Courant via AP, File)CROMWELL, Conn. The tournament director for this week's Travelers Championship had an idea. How about filling the natural amphitheater around the 18th green at TPC River Highlands with giant video boards showing fans watching the golf and cheering from home. All the net proceeds from the golf tournament go to more than 150 Connecticut charities.

There was a secondary test, and those results were not expected until later Saturday at the earliest. Rory McIlroy and Jordan Spieth were among those not surprised by the positive test. It ends provided he has no subsequent symptoms or has two negative test results at least 24 hours apart. All were negative until Watney's positive test on Friday. The PGA Tour heads to Cromwell, Connecticut, next week, followed by Detroit and then back-to-back tournaments in Ohio.

Tyrrell Hatton of England had one of six rounds at 63 as he tries to win back-to-back starts for the second time in his year. Abraham Ancer rode his strong iron play to a 65, while Ryan Palmer had a 66 to join the lead at 15-under 198. A week ago at the Charles Schwab Challenge, 14 players were separated by three shots going into the final round. The six rounds at 63 marked the third time since October that at least six players shot 63 in a round. There were seven such rounds at the RSM Classic in November, about 80 miles down the Atlantic coast at Sea Island.

HILTON HEAD ISLAND, S.C. In the second week of returning to golf, Nick Watney became the first player to test positive for COVID-19. Watney withdrew from the RBC Heritage on Friday, the PGA Tour said. Watney missed the cut last week in the Charles Schwab Challenge at Colonial, the first tour event in three months after it shut down because of the pandemic. He traveled privately to South Carolina and tested negative upon arrival at Harbour Town. Before he arrived Friday for his afternoon tee time, he said he had symptoms consistent with the virus, consulted a doctor and tested positive.