Del Rio was one-for-seven on challenges going into the game but he won one in the fourth quarter when he challenged the ruling that Darius Walker had scored on a sweep right from the Jaguars' 4-yard line.
Del Rio won the challenge as referee Tony Corrente ruled he had gone out of bounds on the 1-yard-line.
But Walker scored on the next play so the Jaguars didn't gain from winning the challenge.
Going for it
On the Jaguars' first possession, Del Rio showed he's willing to gamble on fourth down even when there's nothing at stake.
When the Jaguars faced a fourth-and-one at their 50, the Texans' punt return team ran onto the field, assuming the Jaguars were going to punt.
But when the Jaguars lined up to go for it, the Texans defense ran back onto the field. Quinn Gray threw a four-yard pass to Ernest Wilford to keep the drive alive and the Jaguars went on to score a touchdown on their opening drive.
The Jaguars ended the season by making 19 of 33 fourth-down attempts. They led the league this year in both categories.
--The Jaguars set several team single-season records Sunday against Houston, including most points scored (411), most touchdowns (50) and most touchdown passes (28). The Jaguars tied the franchise record for interceptions (20).
--The Jaguars finished with the most rushing attempts (522), fewest penalties (76) and fewest punts (54) in team history. The Jaguars finished the season with 5,719 net yards (357.4 average), second most in team history. They also set a franchise record for points as they finished the regular season with 411 (25.7 average).
--The Jaguars have scored at least three touchdowns in 10 consecutive games and have scored 24 or more points in 10 straight games for the first time in team history. But their string of 400-yard games was snapped at five as they finished with 381 yards.