- Had career highs in rushing attempts (262), rushing yards (1,066) and rushing touchdowns (a league-leading 17) last season. In five previous seasons, had rushed for 13 touchdowns. With 17 rushing touchdowns, set Lions single-season record, surpassing Barry Sanders' 16.
- College teammate of Saints tight end/quarterback/special team ace Taysom Hill at BYU. They played together in 2012, 2013, 2014 and 2016.
- On Nov. 25, 2021, he carried the ball for the 585th time in his career, breaking the NFL record for the most carries without ever fumbling.
- Rushed for 65 first downs last season.
- He's a self-described nerd for anime, video games and cosplay.
New Orleans Saints announced that they have agreed to terms with free agent running back Jamaal Williams on Friday, March 17, 2023. Check out Jamaal in action with the Detroit Lions during his NFL career.