Ndamukong Suh is back on the field with his teammates. Suh, the three-time Pro Bowl defensive tackle, took part in the Detroit Lions’ first organized team activity practice of the off-season today. Lions coach Jim Caldwell and others said in recent days that they expected Suh to attend today’s practice, after choosing not to participate in voluntary team workouts earlier this off-season. The Lions practiced for about two hours on their outdoor field today and have two more OTAs this week, on Wednesday and Thursday. Suh has not taken part in early off-season workouts the last two years but typically shows up for OTAs — where players can wear helmets and compete in 11-on-11 drills — and mandatory minicamp.