Forget Team Conrad or Team Jeremiah, the biggest rivalry is and always has been Red Sox vs. Yankees.

Just ask “The Summer I Turned Pretty” stars Chris Briney and Sean Kaufman, who left Cousins Beach behind on Saturday and stopped by Yankee Stadium to take in New York’s game against Boston and answer some baseball-themed questions.

Briney, who stars as Conrad Fisher on the hit TV show, has been a Red Sox fan since age 5, when he first saw Nomar Garciaparra play. Kaufman, who plays Steven Conklin, “came out of my mother’s womb … wearing a Yankees hat.”

The two dished on everything from their current favorite players (Jarren Duran for Briney and Aaron Judge for Kaufman) to what their walk-up songs would be (surprisingly no Taylor Swift mentioned ). Neither commented on which team his cha

See Full Page