On the field, Tubbs was a force. At Oklahoma, he anchored the offensive line, earning unanimous All-America honors and playing key roles in all 31 wins across his varsity years. His versatility shone as he shifted to linebacker in the pros, playing for the Chicago Cardinals, San Francisco 49ers, and eventually, the Dallas Cowboys. Though injuries shortened his playing career, he left a mark with his tenacity and leadership.

But Tubbs' true impact came as a coach. Joining the Cowboys in 1961, he honed his defensive mind under Tom Landry, eventually becoming the team's linebackers coach for a staggering 22 years. His aggressive schemes and emphasis on fundamentals helped forge the "Doomsday Defense," one of the most dominant units in NFL history.

Tubbs' influence extended beyond the Cowboys. He mentored countless future Hall of Famers, earning a reputation as a master technician and motivator. His dedication to the game earned him the respect of players, coaches, and fans alike.