Good news, bad news for Colorado Rockies fans ...
The good? BASEBALL'S BACK!!!!
The bad? Three players -- including mega star Charlie Blackmon -- have reportedly come down with coronavirus.
The stud right fielder -- who's been recently working out at Coors Field to gear up for the season -- tested positive late last week ... according to the Denver Post.
Reliever Phillip Diehl and pitcher Ryan Castellani also had positive COVID-19 results.
According to the Post ... only one of the players is showing symptoms -- although it's unclear if that's Blackmon, a 33-year-old, four-time All-Star.