Joe MauerJoe Mauer was given clearance for light workouts last week and even participated in batting practice this past weekend. But the Twins’ star catcher just experienced a pretty frightening setback.

According to Phil Miller of the Minneapolis Star-Tribune, Mauer’s concussion symptoms returned following a workout Wednesday evening at Target Field and he was sent home to rest.

It’s a near certainty now that Mauer will not play in another major league game this season.

Source: Drew Silva, NBC Sports