Having played their first season in 2002, the Houston Texans are the youngest franchise in the NFL. Because of that, the Texans don't exactly have decades of draft experience like many other teams do. And while that can sometimes work in their favor, the Texans have also drafted their fair share of flops.

5. Sam Montgomery

If Montgomery wasn't a late-third-round pick, he'd have the chance to be number one on this list. However, third-round picks simply aren't usually expected to do as much as first-rounders. Regardless, you'd expect a top-100 draft pick to do something during their NFL career.

Montgomery totaled 26.5 sacks in his final two seasons at LSU which is why the pick had strong potential back in 2013. Unfortunately, scheme issues and lack of talent doomed Montgomery and the former collegiate star wouldn't play a single game in the NFL and was released after just one year after violating unspecified team rules.

4. Louis Nix III

Similar to Montgomery, Nix was an exciting defensive line prospect that did pretty much nothing at the NFL level. Standing at 6-foot-2 and 331 pounds, the Texans hoped that Nix could help clog up lanes on defense. So, Houston traded a fourth and fifth-round pick to move back into the third-round and select the Notre Dame defensive tackle with the 83rd overall pick.

Several knee injuries and subsequent surgeries hindered Nix's potential and his career with the Texans ended after just two seasons where the former 2014 third-round pick played just three games.

After practice squad stint with the New York Giants, Washington Redskins and Jacksonville Jaguars, Nix was officially out of the league.

3. Travis Johnson

The 16th overall pick of the 2005 draft out of Florida State, Johnson was supposed to anchor the Texans defense at the defensive tackle/end position. And while he fared much better than Nix, Johnson spent an unimpressive four seasons in Houston.

Despite starting 38 games during that time, Johnson recorded just two sacks and never recorded more tan 41 tackles in a season. The former Seminole was hindered by injuries and after being traded to the San Diego Chargers, he lasted just two more seasons in the NFL.

2. Kevin Johnson 

The most recent pick on this list, Johnson was an exciting cornerback prospect out of Wake Forest that piqued the Texans interest in the 2015 draft when they selected him 16th overall.

Selected just two picks before future two-time All-Pro corner Marcus Peters, Johnson lasted just four seasons in Houston.

In those four seasons, the 6-foot, 185-pound corner started only 18 games and recorded one interception.

1. David Carr

The biggest draft bust in team history also happens to be the franchise's first-ever draft pick. Carr was a can't-miss prospect coming out of Fresno State which is why he went first overall in 2002.

While his struggles as a Texan weren't completely his fault, Carr was far from anything you'd expect from the supposed best player in the draft.

Carr spent five years as the Texans' starter where he completed 60.0 percent of his passes for 13,391 yards, 59 touchdowns and 65 interceptions.

Carr only threw more touchdowns than interceptions in two of his five seasons with Houston but to be fair, being the most-sacked quarterback in the league in three of those seasons (including a NFL record 76 times as a rookie) certainly didn't help.