Jacob deGrom just learned that his hair distracts hitters - NBC Sports

Jacob deGrom's hair bothers player trying to hit

Breaking: Jacob deGrom Plans to Cut His Hair in the Off-Season

Jacob deGrom Blames Himself as the Mets Lose to the Dodgers in a Team Effort - The New York Times

Did Jacob deGrom Sell His Soul To The Devil To Become The Best Pitcher In Baseball In Exchange For His Hair And Any Shred Of Support From His Teammates? Barstool Investigates

July, 2021

Opposing hitter: Jacob deGrom's secret to success is his hair

One player says Jacob deGrom's hair is a big problem for hitters