David Ortiz jokes he’d ‘definitely’ beat Rob Gronkowski in an arm wrestling match

David Ortiz did a live Facebook Q&A with Fanatics on Tuesday in which he answered questions from fans. He was asked various questions, including: Who does Big Papi want to win the NBA Finals? He said he hopes the series goes seven games and that LeBron James “deserves to win.” But then, he added that Steph Curry is his guy…