Rams corner E.J. Gaines must deliver against the Bills and receiver Robert Woods

Rams who must deliver…

Cornerback E.J. Gaines. He made his season debut last week against Arizona and immediately added a physical presence to the secondary. Gaines appears healed from the thigh issue that sidelined him the first three games. Now he needs to step into the starting lineup and team with cornerback Trumaine Johnson, allowing Troy Hill to play as a backup and on special teams.

Defensive end Eugene Sims. Against the Cardinals, he teamed with defensive tackle Aaron Donald to knock quarterback Carson Palmer out of the game. With William Hayes slowed or sidelined because of an ankle sprain, Sims must help contain Bills quarterback Tyrod Taylor and keep him from scrambling for long gains.

Receiver Tavon Austin. He has made two big plays in the last two games and both helped spur the Rams to victory. He caught a pass and faked out a defender for a touchdown against Tampa Bay and returned a punt 47 yards to set up the winning touchdown against Arizona. Austin scored four rushing touchdowns last season. Perhaps he can help get the Rams’ unproductive rushing attack going this week.

Bills to watch out for...

Defensive tackle Marcell Dareus. The two-time Pro Bowl tackle returns from a four-game suspension for violating the NFL’s substance abuse policy. The 6-foot-1, 331-pound Dareus probably will be worked into the lineup as part of a rotation because he is not in football shape. But the third pick in the 2011 draft could still be a disruptive force in the middle.

Receiver Robert Woods. The fourth-year pro from USC leads the Bills with 18 receptions for 170 yards. He has not scored a touchdown this season but knows his way around the Coliseum. He once caught 17 passes in a 2011 USC victory over Minnesota en route to becoming the Trojans’ all-time receptions leader. With the injury suffered by Sammy Watkins, Woods has become Tyrod Taylor’s primary target.

Offensive lineman Richie Incognito. The Bills and running back LeSean McCoy are surging under interim offensive coordinator Anthony Lynn. Incognito is adept at provoking opponents with his mouth and his actions. And Rams defensive players have shown a propensity for retaliating and drawing ejections.