Another PGA Tour player in the Travelers Championship field tested positive for COVID-19 and was forced to withdraw from the tournament.
"It was bound to happen at some point", he said. World No. 4 Brooks Koepka pulled out when his caddie, Ricky Elliott, tested positive as part of the tour's multilayered testing system.
"I'm very happy with the way I played", said Johnson, 36. "Now I guess we're going to stop talking about [the streak] and I can go and just go on to next week".
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California's highest single-day jump in infections, reported last week, trails behind Florida's by more than 2,000 cases. Pinellas County leaders say they do not plan to shut down the county's beaches during the Fourth of July weekend.
Kevin Streelman fired a 63 to be third and three shots adrift of Todd while Mackenzie Hughes, who led after a 60 on Thursday, shot his second straight 68 for sole possession of fourth place.
DeChambeau made a 15-foot birdie at the last, his third in the closing six holes, to sign for a five-under 65 and join Kevin Na in tied-fifth, while overnight leader Phil Mickelson slipped six behind and into a share of seventh after a one-over 71.
Rory McIlroy kept himself within four shots of rampaging leader Phil Mickelson with a steady second round in the coronavirus-marred Travelers Championship in CT. I missed the cut as an [amateur] at the Safeway Open in 2016, and I learned more in those two days than I did in a lot of my events so far as a pro. Brooks Koepka, who Monday-qualified, also withdrew even though he, like McDowell and Brooks Koepka, tested negative.
PGA Tour Commissioner Jay Monahan added: "Denny has our full support as he self-isolates here in Hartford and recovers, and I know I speak for the entire Tour membership in thanking him for doing the right thing in requesting an additional test before heading to the golf course today".
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Florida, for example, reported that almost 9,000 people tested positive for the virus, a record high . But political events in Arizona on Tuesday and Florida on Thursday have been pushed off.
World number one Rory McIlroy is well in contention in a group of players on nine under after his 68.
Graeme McDowell did not compete because his caddie, Ken Comboy, also tested positive.
The third member of their group, Bud Cauley, tested negative but had been experiencing some symptoms consistent with the disease.
The tour said in its statement that all follow-up tests from potential contact with McCarthy were negative.
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It is also not clear whether Russian operatives had deployed inside Afghanistan or met with their Taliban counterparts elsewhere. The intelligence assessment is said to be based at least in part on interrogations of captured Afghan militants and criminals.
The round began early in the day because of threatening weather, with golfers going off both the first and 10th tees.