Compared to Regular Baseball Jerseys they Fit TTS. Compared to Large Shirts/Jerseys they Run Big, Compared to Shirts (Button-Ups, with Tuck-in-Talils) they run TTS. Therefore in general, M = M, L=L, and XL=XL. Unless you grow weird, or big structured.
For everyone that told people Baseball Shirt ran small, smh it actually runs BIG. 1 inch lower from Top-Backno way - compared to a regular shirt or a regular baseball jersey? baseball jerseys are supposed to fit big. Last XL baseball jersey I bought was a joke. It hardly seemed to be a proper L in jersey sizes.
we're just gonna have to see what the people who never copped a baseball jersey before say, i guess it really depends how your body is structured. if youre in between sizes like me it would make sense to size up since cotton twill (fabric used on baseball jersey) isnt a stretchy fabric