Foster attended Saguaro High School in Scottsdale, Arizona, where he rushed for more than 5,000 yards in his career.

[4] He helped lead his team to the Arizona Division III State Championship to cap off his high school career.

[6] Considered a four-star recruit by Rivals.com, he was rated as the 5th best athlete prospect of his class, and drew comparisons to Greg Jennings.

[15] Following the departure of Marion Grice, Foster took over as the main back and offensive weapon for the Sun Devils.

[17] On December 30, 2014, Foster announced he would return to Arizona State for his senior season as a wide receiver.

[19] Coming out of Arizona State, Foster was projected by many analysts to be either a fifth round selection or priority free-agent.

[20] Foster went undrafted in the 2016 NFL draft, and was signed by the Patriots as a rookie free agent.

[34] On August 27, 2018, Foster suffered a torn MCL and ACL in the Cardinals' third preseason game and was ruled out for the season.

[37] Foster was released during final roster cuts on September 5, 2020,[38] and re-signed to the practice squad a day later.