http://bit.ly/2AbEv8g What Mariano Rivera Shared With Roy Halladay, Besides Hall of Fame Credentials Baseball Rivera showed him how he gripped a cutter, and Halladay always kept a ball with that grip traced on it. Both pitchers are sure to be inducted in Cooperstown this year. TYLER KEPNER http://bit.ly/2FDI63u January 20, 2019 at 05:30AM