The Texans signed Mack to a one-year deal in March after his four-year stint with the Indianapolis Colts. Mack was relegated to 32 carries over the past two seasons after he tore his Achilles in 2020 and the emergence of Indianapolis Colts running back Jonathan Taylor last season.
The Texans were hoping Mack could recapture the form he showed from 2018-2019 when he rushed for 1,999 yards and 17 touchdowns to add to the Texans' running back by committee approach this season. Mack rushed for 90 yards in the preseason on 21 carries.
But with Mack being released, that opens the door for 2022 fourth-round draft pick Dameon Pierce out of Florida, who impressed the organization throughout training camp, to be the lead running back for the Texans.
Pierce rushed for 86 yards in preseason and scored a touchdown in two games. The other lead back in the Texans' running back room is Rex Burkhead.
Blacklock finished with two sacks and totaled 36 tackles with three starts during his two seasons with the Texans.
Blacklock was the Texans' first pick in the 2020 draft. And that pick came from the trade that sent wideout DeAndre Hopkins and a fourth-round pick to the Arizona Cardinals for running back David Johnson, a second-round pick and a fourth-round pick.
More Houston Texans stories from 2022 preseason:
- Houstonian brings taste of Texas to Los Angeles with breakfast tacos
- Texans linebackers coach Miles Smith sharing NFL 'grind' with father Lovie Smith
- Meet Frank Ross, a Texans coach that brings his off the field passion to his players and city
- Houston Texans training camp: NFL requires select players to wear padded helmet shell
- Nico Collins explains tennis balls for sleepy eyes and 'The Freezer'
- Texans rookie receiver John Metchie III on the minds of players as he battles 'curable' cancer
- Texans unveil when Salute to Service and Homecoming themes fall on 2022 schedule
- Texans go "Battle Red" with first new helmets in franchise history
- NFL schedule 2022: Texans face Patrick Mahomes, Jalen Hurts, Russell Wilson, Deshaun Watson