The D-backs had two players -- right-hander Noé Ramirez and outfielder Stuart Fairchild -- test positive for COVID-19, manager Torey Lovullo said Friday.

The pair were placed on the injured list, as were first baseman/outfielder Pavin Smith, right-hander Riley Smith and left-hander Joe Mantiply, who landed there as a result of contact tracing.

"We¡¯re doing our absolute best to figure out what¡¯s going on and how things have happened, but sometimes it¡¯s a little tough to unravel," Lovullo said. "I know you guys want to know how long those three players will be out. That¡¯s undetermined. I¡¯ll get that information to you as soon as possible. We¡¯re trying to unravel a lot of this right now. It gets a little bit confusing."

This is the first time the D-backs have had a Major League player test positive for COVID-19 during either the 2020 or '21 regular seasons. Outfielder Tim Locastro tested positive this spring and missed some time.

"I¡¯m proud of the fact that we followed the protocols and didn¡¯t have a breakout last year," Lovullo said. "We¡¯ve made it four months now through the season and didn¡¯t have any type of COVID situation affect us. I¡¯m very proud of that. We got clipped. I don¡¯t think we let our guard down. We were still continuing to follow the protocols. I don¡¯t know where or when things happened or where we picked up this virus, but we did and we¡¯ve got to deal with the consequences moving forward.¡±

Lovullo was asked if any of the five players were vaccinated.

¡°I am unable to share that information with you," he said.

Lovullo does think that the outbreak will not spread further.

¡°I feel very comfortable in saying that everybody who¡¯s here right now is going to be OK," Lovullo said. "We entered today into the stadium, and downstairs we were all tested. I¡¯m sure everybody passed through that protocol and we¡¯re in a good spot.¡±