The Buffalo Bills sent rookies home from the team's facility Thursday as a response to five positive coronavirus tests this week.

"As we were informed by medical experts as training camp opened, we expected to have positive tests for COVID," the Bills said in a statement to ESPN. "With 5 since the beginning of the testing period last Tuesday, we decided to take a disciplined, proactive and preventative approach to hopefully eliminate additional cases within our team."

The Bills' rookies first reported on July 21 to begin testing.

Under the NFL's training camp mandate, players must register three negative tests in a five-day span to enter the facility. Although teams are not required to shut down their facility for a positive test, the Bills chose to minimize risk by sending players home for the day.