The MLBPA reportedly informed players Tuesday that the intake round of COVID-19 testing returned 66 positive results, split between 58 players and eight staff members, according to Marly Rivera of ESPN.

A total of 3,740 tests were conducted. The second phase of testing—the “monitoring phase”—has begun, with the opening round of saliva tests coming back with 10 positive results (eight among players) from 2,111 tests.

However, the testing protocols haven’t gone completely smoothly since being implemented. The Washington Nationals, Houston Astros, St. Louis Cardinals and San Francisco Giants were all forced to cancel workouts after they didn’t receive test results back in time to safely proceed.