Parker Kelly signed a limited number of official Big 12 game baseballs to commemorate his amazing game where he hit two grand slams in the same game. The two grand slams in one game is a Texas Tech record.
Parker hit three homeruns in that game (two of which were grand slams) and nine runs batted in. These stats are also included by Parker on the baseballs.
Baseballs are numbered out of 24 and include the B Run Sports tamper proof hologram label.