Injuries plagued the opening weekend in the NFL. New England quarterback Tom Brady stood out as the biggest casualty, but other supporting players like New Orleans wide receiver Marques Colston could also be big losses on your fantasy roster. Here are some players that you should be able to pick up in free agency to fill the gaps on your roster:

Sammy Morris, running back, New England Patriots — With Brady out and Matt Cassel getting used to the starting job the Patriots will lean on the running game for the next few weeks. Laurence Maroney didn’t perform as expected in the season opener, so expect Morris to continue to split carries at running back for the time being. Morris did have the only rushing touchdown for the Patriots in the game, so if your team is a little thin at running back, especially in a large league, make sure to take a look at Morris.

Chris Johnson, running back, Tennessee Titans — Johnson may be the most underrated rookie running back in fantasy leagues. He had a strong performance in his first NFL game with nearly 100 yards rushing and one receiving touchdown. He’s a smaller, faster version of Reggie Bush and according to yahoo.com, he is owned by 74 percent of fantasy owners. In a 10 to 12 team league he should still be available and could fill in for banged up starters.

Eddie Royal, wide receiver, Denver Broncos — Royal was drafted high by the Broncos for his potential in the return game. When fellow wide receiver Brandon Marshall was suspended for the first game of the season, the doors opened for Royal to play a big role. Royal’s role will diminish with the return of Marshall this week but his speed and ability to do almost anything on a football field will earn him a considerable amount of playing time through the season. Royal could become a dangerous weapon throughout the season.

Devery Henderson, wide receiver, New Orleans Saints — With the injury to Marques Colston, the secondary receivers for New Orleans will be counted on heavily over the next month. Henderson is your best bet because of his speed and big play ability. Quarterback Drew Brees likes to air the ball out long in the passing game and Henderson had one catch in the first game of the season for 84 yards. His number of looks will increase and according to yahoo.com, Henderson is owned by only 28 percent of owners in fantasy leagues.

Trent Edwards, quarterback, Buffalo Bills — Edwards guided an efficient offense to a rout of the Seahawks last weekend. Edwards had more than 200 passing yards and a touchdown in the game against Seattle and remains a fantasy gem owned by a small minority of fantasy owners. Edwards could come up big this weekend against a Jacksonville defense that looked rusty last weekend.

J.T. O’Sullivan, quarterback, San Francisco 49ers — After Shaun Hill and Alex Smith gave way to O’Sullivan in the quarterback battle, offensive coordinator Mike Martz was supposed to turn him into an offensive giant. It may begin this week against a Seattle defense that struggled mightily against the Bills last weekend. O’Sullivan had nearly 200 passing yards in a game where his team scored only 13 points. Against a Seattle team that already has too many problems, O’Sullivan could have a big game.

— — Edited by Arthur Hur