Delaware State / High School
- Gillis rushed for 2,474 yards and 19 touchdowns during his career at Delaware State and was the 2022 MEAC Rookie of the Year
- Tallied 1,182 rushing yards (13th in the FCS) and nine rushing touchdowns in 2025, averaging 6.45 yards per carry (eighth in the FCS) and 98.5 rushing yards per game (11th in the FCS)... Also had 11 catches for 98 yards with a touchdown
- His 86.0 rushing grade in 2025 was tied for 20th among FCS running backs... His 816 yards after contact were 12th in the FCS and his 4.6 yards after contact per rush were ninth
- Three-star transfer portal prospect and Top-100 running back in the portal by On3 and a three-star prospect by 247Sports
- Two-way standout at Milford High School .(running back / defensive back) ... rushed for more than 2,000 yards and 20 touchdowns during his scholastic career…. also recorded three defensive/special teams touchdowns, three interceptions and over 100 tackles on the defensive side of the ball
- Milford’s Maxwell Award recipient as team MVP and Delaware Blue-Gold High School All-Star …. Delaware All-State and Henlopen Conference First Team selection as a defensive back … All-Henlopen Conference Second Team running back