Coady attended J. J. Pearce High School in Richardson, Texas and was a student and a letterman in football and basketball. In football, as a senior, he was named his team's Most Valuable Player and was an All-District selection and an All-Metroplex selection.
College
Coady attended Texas A&M University, where he was a three-year starter for the Aggies. Originally came to Texas A&M as a non-scholarship athlete and worked his way into the starting lineup, starting 39 games in a row and becoming an integral part of the Aggies' 1998 Big 12 Conference championship team. Led the A&M secondary in tackles for three straight seasons and had eight career interceptions. As a senior Coady was First-team All-Big 12 and made 86 tackles and had three interceptions. The year before he made 93 tackles and made two interceptions. In 1996, as a sophomore, he had 64 tackles solo and three interceptions. As a freshman Coady was a reserve safety and made 23 tackles.
Professional career
Pre-draft
His stock rose quickly in the draft due to his workout at the NFL Combine where he tested with a 4.55 40-yard dash, 20 reps of. on the bench press, a 36" vertical jump and 3.88 seconds in the 20-yard shuttle. He also posted a 330 lb. power clean, 360 lb. bench press and a 450 lb. squat
St. Louis Rams
He was drafted by the St. Louis Rams in the 3rd round of the 1999 NFL Draft. On July 17, 1999, Coady signed a four-year $1.2 million contract with the club. He won a Super Bowl ring in Super Bowl XXXIV, his rookie year playing as a reserve safety. He started two games in both 2000 and 2001 due to injuries to the starters. He played three years in St. Louis and was released August 28, 2002.
On August 30, 2002, the Tennessee Titans claimed Coady and signed him to a one-year $890,000 contract. In the 2002 season Coady played 14 games and started two for the third year in a row. He made 19 tackles and intercepted one pass which he returned 24 yards for a touchdown. He also forced a fumble and deflected three passes.
Indianapolis Colts
Coady signed a one-year $555,000 contract with Indianapolis as a free agent On March 7, 2003.
St. Louis Rams
In the training camp of 2003 the Rams had several injuries at the safety position and Coady was familiar with their system so on August 30, 2003, the Rams traded a conditional seventh-round draft pick to the Colts for Coady, less than six months after signing him as an unrestricted free agent. In 2003 Coady played 13 games and starting five with 41 tackles. On March 24, 2004, the Rams signed Coady to a one-year $561,000 contract for the 2004 season. He played in 16 games and starting five and making 44 tackles. The Rams did not offer Coady a contract for 2005, making him a free agent.
