Marcus Edward "Doc" Holliday (born July 16, 1973) is a former American football running back who played with the St. Louis Rams of the National Football League and the Hamilton Tiger-Cats of the Canadian Football League. He played college football at Memphis.^[1][2]

Holliday, who grew up in Memphis, was a fan of the Memphis Tigers men's basketball program and decided to commit to the University of Memphis for that reason,^[3] choosing it over Ole Miss, Northern Illinois, Arkansas, Arkansas State, and Tennessee.^[4] While at Memphis, he was friends with several basketball players and future NBA stars, including Penny Hardaway and David Vaughn.^[3]

Holliday played for the Memphis Tigers football team from 1991 to 1994. In 1994, he was the school's rushing leader with 618 yards and three touchdowns that year. He also played in the 1994 Blue–Gray Game.^[5]

During a 13–0 shutout win against Tulane in 1994, Holliday set the Memphis record for most rushing attempts in a single game with 42, gaining 151 yards in the process.^[6] The record still stands as of 2021.^[5]

Holliday was formerly the sports director at ABC affiliate news station WATN-TV.^[3][14] He now serves as the Director of Broadcast Operations at Rust College.^[14]

He also hosts a podcast called Bleav in Rams with his former teammate Isaac Bruce.^[15]

Holliday and his wife Yatasha have four children: sons Marcus Holliday II and Jalen Kellum, and daughters Marchana and McKenzie. Marcus II played running back for the Murray State Racers and the Lane Dragons.^[16][17]

In 2009, he was held at gunpoint by a 16-year-old student on the high school football team he was coaching.^[18]