DAVIE, Fla. -- The Miami Dolphins opened training camp Friday by placing Pro Bowl center Mike Pouncey and running back Knowshon Moreno on the physically unable to perform (PUP) list.

Pouncey had major hip surgery this summer and reportedly could miss as much as eight weeks of the regular season. Moreno had a cleanup procedure on his knee and should return before the end of the preseason.

Both players are expected to eventually be key members of Miami's offense. Pouncey is arguably the Dolphins’ best offensive player. Moreno, who started last year for the Denver Broncos, signed a one-year contract to compete with incumbent starting tailback Lamar Miller.

The Dolphins opened training camp on Friday. Dolphins general manager Dennis Hickey also said everyone passed their conditioning tests.