Adrian Peterson says he stayed in shape and was ready when the Tennessee Titans called him.

(AP Photo/Charles Krupa)NASHVILLE, Tenn. – NFL Commissioner Roger Goodell has warned the league's 32 teams of penalties including potential forfeits of games for violations of COVID-19 protocols that force changes in the regular-season schedule. In a memo sent to the teams Monday after a conference call involving NFL and club executives, Goodell reiterated the need to adhere fully to all of the league's health and safety guidelines. “Protocol violations that result in virus spread requiring adjustments to the schedule or otherwise impacting other teams will result in additional financial and competitive discipline, including the adjustment or loss of draft choices or even the forfeit of a game,” Goodell wrote in the memo obtained by The Associated Press. "We must reinforce our commitment to full adherence to our mandatory safety protocols and best practices. “As we have said before,” Goodell wrote, “act as if every person you come in contact with has a COVID infection and take appropriate precautions.”___Follow Teresa M. Walker at https://twitter.com/TeresaMWalker___More AP NFL: https://apnews.com/NFL and https://twitter.com/AP_NFL

Nissan Stadium, home of the Tennessee Titans, is shown Tuesday, Sept. 29, 2020, in Nashville, Tenn. The Titans suspended in-person activities through Friday after the NFL says three Titans players and five personnel tested positive for the coronavirus, becoming the first COVID-19 outbreak of the NFL season in Week 4. (AP Photo/Mark Humphrey)NASHVILLE, Tenn. – Another Tennessee Titans player, fullback Khari Blasingame, and another staff member have tested positive for the coronavirus, while the rest of the NFL returned no new positives on Sunday, a person familiar with the situation told The Associated Press. The Titans' outbreak is now at 20 cases, with 18 positive tests returned since Tuesday with the addition of Blasingame to the COVID-19/Reserve list on Monday. Sunday marked the sixth straight day that at least one member of the Titans’ organization has had a positive test result return.