Star players usually have the biggest impact when it comes to determining the outcome of football games, but that doesn’t mean that role players don’t make a difference.

Here is a look at five players who do not start for the Packers right now, but who have made an noticeable contribution to the team’s success so far this season.

5. OT Rick Wagner

Wagner has filled in as a starter in three games thus far this season due to injuries to Lane Taylor, Billy Turner and David Bakhtiari. The former Wisconsin star signed with the Pack as a free agent this past offseason but did not win a starting spot out of training camp.

When he’s been asked to play, Wagner has done a strong overall job. He even had to play some tight end when Marcedes Lewis was hurt and the team needed someone to fill in his blocking TE role for part of one game.

Wagner is much better at right tackle than he is at left, but his pass blocking has been strong and consistent while his run blocking has been adequate.

The Packers offensive line depth has been a big reason for the team’s success. Players like Wagner and rookie guard Jon Runyan have both contributed to the line’s success despite not being starters.

4. S Raven Greene

Greene is not a starting safety, but he does make a big impact on the defense when he’s healthy. Greene often plays the hybrid safety/inside linebacker position which allows the defense to play nickel or dime but still slow down the run.

Greene gives the defense versatility and flexibility. The team’s defense has struggled this year, but they are clearly better with Greene in the lineup than without him.

Injuries slowed Greene early in the season and he’s missed two full games thus far. He already has one interception, one sack and a career-high 23 tackles.

3. RB/WR Tyler Ervin

Tyler Ervin may only touch the ball a handful of times per game on offense, but his presence helps open things up for the offense and keeps opposing defenses wary of what he might do when he gets the football.

Most of Ervin’s carries are on draw plays or jet sweeps while his pass receptions tend to be short passes that give Aaron Rodgers an outlet receiver. Because of his speed and ability to change direction, Ervin is a threat to break a big play any time he gets the ball in space.

Ervin missed two games so far this year due to injuries and it’s no surprise that one of them was the loss against Tampa Bay which was by far the offense’s worst performance. Ervin would have been a good alternative on short passes and jet sweeps that may have helped slow down the Bucs defense in that game.

Ervin has 12 carries for 67 yards which gives him a healthy 5.6-yard average. He also has caught 10 passes for 81 yards.

In addition to his production on offense, he is the team’s best kick and punt returner. Ervin doesn’t start, but he clearly makes a difference on offense and special teams.

2. DB Chandon Sullivan

Sullivan is the Packers nickel or slot corner so he is on the field a lot although he is not one of the team’s top two cornerbacks.

Sullivan continues to do a good job in the slot. Thus far though eight games, opposing quarterbacks have a quarterback rating of only 68.4 when targeting receivers covered by Sullivan.

The former Georgia State star has made 14 tackles thus far this season while breaking up three passes. He also has one interception which he returned seven yards for a touchdown in the Week 2 victory against Detroit.

Sullivan is smart, consistent and hard working and gives the Green Bay secondary some badly-needed stability. He limits the effectiveness of slot receivers and that is one less thing for the defense to worry about.

1. RB Jamaal Williams

Jamaal Williams may not be the Packers number one option at running back, but he is one of the most reliable backups on the team and he contributes to the offense every time he takes the field.

Williams has gained 294 yards and is averaging 4.3-yards per carry thus far this season while catching 23 passes for 183 yards.

In addition to his tough, inside running, Williams is the Packers most reliable pass receiver out of the backfield and he is the team’s best pass blocker among running backs.

He is also a strong asset in the locker room. Williams’ enthusiasm is contagious and his pre-game dance moves inspire teammates and fans alike.

The BYU alum is good enough to start for many NFL teams and does the little things right that coaches always appreciate.