In 2013, Mueller was a Second Team All-American performer by the Football Writers Association of America (FWAA) after tying the school record for sacks with 11.5. He was also named the Big 12 Defensive Lineman of the Year in 2013. and was named First Team All-Big 12. He was also a candidate for the Ted Hendricks Award. Mueller also tied the schools single game sack record vs Texas Tech with 3 sacks.
