In 1999 Lyght earned his first Pro Bowl selection and was a first-team All-Pro as well. He recorded 65 tackles and had 6 interceptions, 2½ sacks, 15 passes defensed and one forced fumble. He scored his fourth career touchdown on a 57-yard interception return versus the Carolina Panthers on November 14, 1999. He also recorded 22 tackles, had one interception and deflected 5 passes in the playoffs as the Rams went on to win Super Bowl XXXIV. He also blocked a field goal attempt in the Super Bowl.