How to Sign an MLB Baseball with the Texas Rangers Dallas, TX (5/9/2015) – On Saturday, May 9th, John Blake, Vice-President of Communications for the Texas Rangers, will show visitors how to properly sign an MLB baseball. He will bring to the presentation MLB baseballs signed by different players, general managers, et cetera. The presentation begins at 2:00 p.m. in the classroom. A great compliment to the Museum's special exhibit - Baseball: America's Presidents, America's Pastime, if you love baseball, this presentation will be a real treat! For more information, please email email@example.com.