Why is Justin Turner's jersey stained

Does JT Ruin Every Jersey of Every Game or What is their Laundry Department Using to Clean Them? I Need Some of That Detergent! : r/Dodgers

Dodgers' World Series win marred by Justin Turner's return to field

Why does Justin Turner always have a black smear on the back of his jersey? Superstition? Also, why do some players batting helmets have mud/oil rubbed on the front of them?

LA Dodgers x Justin Turner jersey 10 Promotional - Depop

Dodgers Star Justin Turner Has Unusual Jersey Modification

Astros Down the Dodgers in a Dramatic and Dizzying Slugfest - The New York Times

Does JT Ruin Every Jersey of Every Game or What is their Laundry Department Using to Clean Them? I Need Some of That Detergent! : r/Dodgers

Why is Justin Turner's jersey stained

Why Does Justin Turner Have a Stain on His Jersey? The Mystery, Solved

Nationals pour it on Astros as post-season magic continues in World Series

Justin Turner Authentic Game-Used Jersey from 5/11/21 Game vs. SEA

Outside The Confines: More baseball, please! - Bleed Cubbie Blue