He received the Brian Kozlowski Award, named for the former Husky tight end and 13-year NFL veteran.

McClain was an All-State selection at Patuxent High School in Lusby, Maryland, under head coach Steve Crounse.

He attended Eaglecrest High School in Aurora, Colorado in 2002-2003, where he played as a starting running back.

McClain played in the final seven games on special teams returning 13 kickoffs for an average of 19.0 yards and two punts.

[4] He started against Syracuse November 15 after an injury to Darius Butler and returned an interception 37 yards for a touchdown.

He accumulated a total of three interceptions on the season, 5.5 tackles for a loss, five pass breakups, a quarterback hurry.

[2][3] McClain was tied for second best with 4 interceptions in the Big East, was third on his team with 60 tackles in regular season play, and was considered a prospect for the NFL draft.

[3] After a performance in the PapaJohns.com Bowl at Legion Field where McClain was "seemingly was everywhere on defense and special teams Saturday in the Huskies’ 20-7 win over South Carolina", with four tackles, two tackles for loss, three pass breakups" and impressive punt returns, McClain said he will be trying for a pro football career.

After cutting Dunta Robinson, and letting Chris Owens and Brent Grimes walk to the Cleveland Browns and the Miami Dolphins, respectively, in free agency, McClain reprised his role in the nickel spot behind Asante Samuel and Desmond Trufant in 2013.

[16] On September 17, 2017, in Week 2 against the Chicago Bears, he intercepted quarterback Mike Glennon and ran the ball back 47 yards for a touchdown.