Hamlin, a freshman All-American and all-conference selection last year, was second on the team with 11 tackles. He was one of five players to be in on two tackles for losses and he teamed with Raymond House for one quarterback sack.
The Memphis native also had an interception, a fumble recovery and two pass breakups.
"Our defense had an outstanding effort against UNLV and Ken was a big part of that," UA head coach Houston Nutt said. "When you are named the outstanding defensive player in a league like the Southeastern Conference, it is a notable accomplishment. Our entire defense played well. Ken is certainly deserving, but even more so I think it is a recognition of our entire defensive squad."
Hamlin led the team with 104 tackles last year, becoming the first freshman in school history to lead the club in stops. He was also the first Razorback to record 100 tackles since Mark Smith had 115 in 1995.
The tackle total against UNLV is the fifth double-digit effort of Hamlin's career. He had a career-high 16 stops in the win over Alabama last year.
Dating back to last year, Hamlin's selection gives Arkansas three consecutive SEC Defensive Player of the Week picks. Linebacker Quinton Caver, now with the Philadelphia Eagles, was the conference's player of the week following the Mississippi State and LSU games.
Quarterback Rex Grossman of Florida was named the league's offensive player of the week.
Hamlin Named SEC Defensive Player of the Week
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