Minnesota Twins outfielder Max Kepler has apologized for wearing a Blue Lives Matter mask in the wake of George Floyd's tragic death ... saying he "had no idea that the mask had any underlying inferences."
The 27-year-old MLB player posted a picture of himself in a mask featuring a Blue Lives Matter flag ... just days after people accused a Minneapolis cop of killing Floyd by putting his knee to the man's neck.
The mask -- which had a black and grey American flag with a blue stripe in it -- caused tremendous online backlash for Kepler .