Final answer:
NRG Stadium was previously named Reliant Stadium before it was renamed in 2014.
Step-by-step explanation:
NRG Stadium was previously known as Reliant Stadium before it was renamed in 2014. Located in Houston, Texas, it is a multi-purpose stadium and is the home of the Houston Texans, a professional football team in the NFL. NRG Stadium has also hosted other major sporting events such as the Super Bowl and college football championship games.