Adams was drafted in the second round of the 1998 NFL Draft by the Dallas Cowboys. He was expected to go higher, but questions about his partially deaf right ear and his athletic ability made teams wary of his potential value. He became a 10-game starter at right guard as a rookie, and as a second-year pro was moved to left tackle, where he played at a dependable level, but never distinguished himself. It is believed 2002 was the first time a NFL franchise had five African American starters on their offensive line, when the Cowboys lined up rookie centerAndre Gurode, tackles Adams and Solomon Page, guards Larry Allen and Kelvin Garmon. When Bill Parcells became the Cowboys head coach for the 2003 season, there were doubts about the fifth-year player's future with the team. Parcells made re-signing him a priority, which became a turning point in his career, that saw his performance improved to a level that earned him five Pro Bowl selections. In 2007 he earned All-Pro honors. Adams tore his ACL in 2005 playing against the New York Giants and was out for the final 10 games of the season. On February 28, 2008, he signed a six-year contract with the Cowboys. It was in the neighborhood of $42 million, including $15 million in guaranteed money and about $13 million in signing bonus. In the 2009 season, Adams was fined several times for kicking at and tripping opponents. Adams also was part of an altercation with several Giants in their December 6, 2009, game at Giants Stadium after he pushed Justin Tuck from behind after a play had been blown dead, an action which drew review by the NFL and a fine of $50,000. As a result, a rule change was approved during the off-season where any personal foul that occurs after the clock expires during a half will result in a 15-yard penalty on the second half or overtime kickoff. Adams was criticized for his false start and holding penalties, being called for the second most penalties in the NFL between 2006 and 2009. The Cowboys released Adams on April 2, 2010 in a salary cap move. He is often overlooked as one of the top offensive linemen in club history, but only Larry Allen, Rayfield Wright, Nate Newton, and John Niland have more Pro Bowl selections among offensive line players. He was also a durable player, missing only 14 games in his 12-year career with Dallas.
Pittsburgh Steelers
On July 29, 2010, Adams agreed to a two-year deal with the Pittsburgh Steelers. He replaced starting right tackleWillie Colon, who suffered a season-ending injury. Adams's move to Pittsburgh landed him in Super Bowl XLV, where was a starter as the Steelers lost to the Green Bay Packers. He was released on July 29, 2011, after one season in Pittsburgh.
Personal
Adams is the cousin of former National Basketball Association player Hersey Hawkins. His nickname is "The Hotel", in reference to his 6-7, 340-pound frame. He is partially deaf in his right ear. He resides in Flower Mound, Texas. He also wears size 22 shoes.