Pittsburgh Steelers head coach Mike Tomlin confirmed outside linebacker Bud Dupree will miss the remainder of the NFL season due to a “significant” knee injury.

Dupree was placed on the reserve/injured list on Thursday after reportedly tearing his anterior cruciate ligament (ACL) in Wednesday’s 19-14 win over the Baltimore Ravens.

The 27-year-old appeared to injure his knee during a non-contact play in the second half as the unbeaten Steelers went on to claim their 11th consecutive victory to open the season.

“You can characterise it as official that Bud is out for the year with a significant knee injury,” Tomlin told reporters on Thursday.

Through 11 games, Dupree had 31 tackles, eight sacks, eight tackles for a loss, 15 quarterback hits, two passes defenced and two forced fumbles for the high-flying Steelers.

Dupree, who enjoyed a breakout season in 2019, is set to become a free agent after playing on a one-year franchise tag this term.

The Steelers improved to 11-0 – the 13th team to achieve the feat in the Super Bowl era – courtesy of their hard-fought victory against the coronavirus-hit Ravens midweek.