Mims grew up in East Palo Alto, California and attended high school at Menlo-Atherton.

Mims had a breakout game in week nine, where he rushed for 186 yards and two touchdowns to help upset #21 San Diego State and hand them their first loss of the year, beating them 30–20.

[9] Mims opened up the season hot, having a standout game in week two against Oregon State, where he rushed 21 times for 122 yards and two touchdowns.

However the Bulldogs would fall 35-32 as Oregon State fullback Jack Colletto scored a game winning touchdown.

[12] Just a week later in Fresno State's season finale Mims rushed for three touchdowns to help beat Wyoming 30–0.

[27] He was promoted to the active roster on October 14 and made his regular season debut in the Saints 20–13 loss to the Houston Texans, where he recorded one tackle in a special teams role.