enthusiast.Back in the day, meaning way, way back (1950’s) we used car grease with a single line under each eye. The object was to reduce the sun’s glare when catching a fly ball. Originally only outfielders did it but, because it looked cool, infielders started doing it. I was a decent Little League, Pony League, and high school second baseman. I painted my face for every game (looked cool). I cannot recall one play I made only because of it. Okay. Today, even when playing in overcast conditions, or even domed stadiums, most baseball and softball players paint half their faces. Not saying there is not a reason, just asking why.