(AP) — PGA Tour Commissioner Jay Monahan went from wondering if any golf would be played this year to a schedule that resumes next week with a calendar filled through Thanksgiving.

What hasn’t changed is his belief that the worst of the COVID-19 pandemic isn’t over just because golf is back.

“I don’t think it’s over,” Monahan said Friday in a telephone interview. “I’m really confident in the plan. But you spend a lot of your time, given the uncertainty, thinking through scenarios that could play out. That’s what we’ll continue to do. We won’t be comfortable until we’re told we can be comfortable. That will be when we have a vaccine and there’s no risk.”

Golf is the second major sports league to return behind NASCAR, which began racing three weeks ago and ran nine national series races in a span of 14 days.

The Charles Schwab Challenge next week in Fort Worth, Texas, has one of the strongest fields in Colonial’s rich history, starting with the top five players from the world ranking.

There will be no spectators for at least a month, even though Texas Gov. Greg Abbott this week moved the state to Phase III in the recovery that allows outdoor events at 50% capacity.

“We’ve developed a safety plan that doesn’t include spectators. That’s what we stand by,” Monahan said. “We want to have a sustained return. If you think about a run to go through the FedEx Cup, we want to make sure week to week we’re not taking on unnecessary risk.”

Monahan said he is “not the arbiter of confidence,” rather it comes from guidance of health experts at all levels and a plan that involves testing players, caddies and essential personnel as much as twice a week — trying to create a bubble for the traveling circus that is golf.

Players were mailed a test kit and were recommended to use it before they travel. They will be tested when they arrive at tournaments and before they leave if they’re on charter flights the tour has arranged, and then the process is repeated at the next tournament. Thermal readings and health surveys are required daily, along with sanitizing and social distancing.

“It’s the only manner we could return,” he said.

The tour added another layer this week in a deal with South Dakota-based Sanford Health to have mobile labs at every tournament, with capacity to get results in a matter of hours without taking away resources from the markets where they play.