Rivals.com Texas Football Recruiting Analyst Nick Krueger on the commitment of Klein Collins 2019 four-star running back Isaiah Spiller to Oklahoma on Tuesday night. Spiller has rushed for more than 1,000 yards this season and gives the Sooners have stockpiled other top running back prospects like T.J. Pledger in 2018 and Jase McClellan in 2020. Spiller chose Oklahoma over other early favorites like Texas A&M and TCU.