The Bills made a new addition to their quarterback depth chart signing veteran free agent Kyle Orton on Saturday, who was most recently serving as a reserve QB with the Dallas Cowboys. Here are the five things you need to know about Buffalo's newest signal caller.

1. He's seen it all.

Orton, 31, has been in the league since 2005 when the Bears made him a fourth-round draft choice out of Purdue. He has started 70 of the 75 careers games in which he has played. The 10-year vet has also played for four different NFL clubs in his career.

2. He had early success.

As a rookie Orton was thrust into the starting lineup for the Chicago Bears after a preseason injury to Rex Grossman in 2005. He went 10-5 in the games that he started. His 10 victories are the fourth-most in the NFL since the merger trailing only Ben Roethlisberger (13), Joe Flacco (11), Matt Ryan (11) and Russell Wilson (11).

3. He's beaten Tom Brady.

After being traded to the Denver Broncos in 2009, Orton led the Broncos to a 6-0 start. One of those victories came in overtime against the New England Patriots. Orton completed 35 of 48 passes for 330 yards and two touchdowns, and led an 11-play 53-yard drive that culminated in the game-winning field goal for Denver 20-17. He was named AFC Offensive Player of the Week for his performance.

4. He's still got it.

Orton's last start was in Week 17 last season when he started for the Cowboys in place of an injured Tony Romo. Facing the Philadelphia Eagles, Orton had a very productive passing day. Though the Cowboys dropped a narrow decision 24-22, he completed 30 of his 46 passes (65.2%) for 358 yards with two touchdowns and two interceptions.

5. He's a respected leader.

Orton is a well-respected veteran quarterback among NFL personnel men and players. Chicago GM Phil Emery was recently contemplating adding him to the Bears roster earlier this month. In a recent radio interview Emery said the following about Orton.

"I have great respect for Kyle," Emery told Jeff Dickerson on ESPN Radio. "Great leadership skills, guys really like playing for him, big arm. So the skill set is there."