Sanchez, 20, is the Phillies' top pitching prospect and MLB Pipeline's No. 7 RHP prospect. He was 4-3 with a 2.51 ERA in Single-A Clearwater last season.
"Bryce Harper loves J.T. Realmuto," Frisaro said. "The Padres, a week or so ago, were in on Realmuto and around that same time you heard that the Padres were meeting with Harper's group. At the all-star game Harper put a Nationals hat on top of Realmuto's head during the introductions. In a game where the Marlins happened to beat the Nationals in Miami, J.T. had the game winning hit — a little flare to right field — and he made like a great play in the field, threw a guy out and after the game Harper publicly said, 'If we had that guy we would have won.' "