Three things: Rams-Cowboys

Three things to watch for Saturday night in the St. Louis Rams' third exhibition game, this one at Dallas (8 p.m. ET):

1. Center of attention. Veteran center Scott Wells makes his Rams debut after recovering from knee surgery. Wells was one of the Rams' key free-agent signings. The team expects Wells to take pressure off quarterback Sam Bradford by handling more of the pre-snap responsibilities. This game gives Wells and Bradford a chance to work together in a game situation. Getting through the game healthy will be important for Wells, who is 31 years old and has started 100 regular-season NFL games. Wells did not miss a start in his final two seasons with Green Bay.

2. Offensive draft choices. The Rams already know first-round defensive tackle Michael Brockers and second-round cornerback Janoris Jenkins are going to start. They feel very good about those players' ability to contribute right away. There's less certainty surrounding the team's offensive rookies. Running back Isaiah Pead, receiver Brian Quick and receiver Chris Givens are the three primary ones to watch. Running back Daryl Richardson, a seventh-round pick, and guard Rokevious Watkins (fifth round) could also factor. Coach Jeff Fisher has indicated younger offensive players could get into this game earlier than usual. How will they fare?

3. Roster battles. Teams must reduce from 90 to 75 players by Monday. Tight end and safety are a couple positions with question marks around the fringes of the roster. Tight end Mike McNeill caught my attention -- and just about every pass thrown his way -- early in training camp. Safeties Darian Stewart and Craig Dahl aren't expected to play against the Cowboys. The Rams were excited about signing Matt Daniels as an undrafted free agent. Another undrafted free agent, Rodney McLeod, could get an opportunity as well. The tough decisions come on the reduction to 53 players, scheduled for Friday.