9. Steve Beuerlein (1991-1992)
Regular season record: 4-0
No. 21 All-Time Cowboys Passing Yardage: 1,061
Again, when a team has had as many long-term signal callers as the Cowboys have, there are some players who crack the top 10 that fans normally wouldn't think of. That's the case with Steve Beuerlein who was with the franchise for just two seasons and played in a total of 24 games with four starts — and he was 4-0 in those starts.
Beuerlein was added ahead of the 1991 season as Jimmy Johnson wanted a trusted backup to play behind Troy Aikman. Beuerlein just spent three seasons with the Raiders and was 8-7 with 3,320 yards and a 21-to-16 touchdown-to-interception ratio.
Those numbers weren't exactly going to get him to the Hall of Fame but anyone would take that from their No. 2 at the time. And with Dallas, he was even better.
In 1991, he replaced an injured Aikman and threw for 909 yards with five touchdowns and two picks. He even led them to a win that doesn't go under his belt, throwing a late touchdown pass in Week 13 of that season to Michael Irvin, knocking off Washington who was 11-0 at the time.
Beuerlein even stayed in the lineup when Aikman recovered, leading them to a playoff win over the Chicago Bears.
The following season, Aikman took off and Beuerlein hardly saw the field again. He had a short sting with the Cardinals before starting 51 games for the Carolina Panthers.