Johnny Manziel won’t throw at Texas A&M’s pro day February 10, 2014 by Paul Jackiewicz Leave a Comment According to John McClain of the Houston Chronicle, Johnny Manziel won’t throw at Texas A&M’s pro day. Johnny Manziel won't throw at Ags pro day march 5. He will throw on March 27 at A&M. — John McClain (@McClain_on_NFL) February 10, 2014 This is very interesting since pro day’s are typically very controlled. I guess it’s not enough for Manziel.