Mar 15, 2016 8:30 PM GMT
While the tweet doesn't explicitly say that Rose endorsed Trump, the candidate did use a picture of a baseball signed by Rose that reads, "Mr. Trump, Please make America great again. [Signed] Pete Rose."
Donald Trump is locked in a tight race for Ohio with its Gov. John Kasich. A win in Ohio for Trump could put the delegate lead out of reach for every other Republican candidate, so Trump has been working hard to win over voters there.
But Rose's lawyers told The Washington Post on Monday there has been no official endorsement by the baseball legend.
"We do not know how Mr. Trump got the ball," attorney Ray Genco said.