The Detroit Lions are about to face off against the Chicago Bears for their annual Thanksgiving Day game. Unfortunately for them, a short week means that injured players have less time to heal and prepare, leaving the rookies to fill their roles.

Here’s what to expect from the rookies before Thursday’s game:

Quarterback David Blough

Matthew Stafford has been ruled out.

Jeff Driskel, limited with a hamstring injury, is not expected to play.

Now, the Lions have to rely on undrafted rookie David Blough to lead the offense this Thanksgiving.

The rookie out of Purdue, who the Lions acquired via trade from the Cleveland Browns, has yet to play a snap in a regular-season game. With Cleveland in the 2019 preseason, he completed 58 percent of his passes for 271 yards and two touchdowns, along with two interceptions.

The level of competition will be much higher than they were in the preseason. The Bears have one of the best defenses in the league at the moment, so the rookie will have a lot to prove.

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Running back Ty Johnson

Johnson’s rookie campaign has slowed down immensely due to Bo Scarborough’s recent successes on offense. Once thought to be the team’s starter, Johnson has taken just 31 snaps on offense since the Lions signed Scarborough two weeks ago, rushing six times for 17 yards and making three receptions for a mere 10 yards.

Facing off against a solid Bears’ run defense that is allowing just 3.7 yards-per-carry this season, Johnson isn’t expected to contribute much on offense this week.

Tight ends T.J. Hockenson and Isaac Nauta

Despite taking the most tight end snaps last week, Hockenson managed to keep his name clear from the box score. He was targeted twice but failed to make a reception on either pass. Expect the team’s first-round pick to start once again, but don’t expect him to make a difference on offense — especially if his shoulder injury continues to be burdensome.

Nauta, who played in his first regular season game last week, took a bulk of his snaps from the fullback position. While only used for a handful of offensive snaps, the rookie tight end showed promise as a run blocker. His ability as a lead blocker could make an impact in Detroit’s run game. Expect the rookie’s role to be limited to fullback and special teams against Chicago.

Offensive lineman Beau Benzschawel

The undrafted rookie was active for the first time in his career on Sunday but never saw the field.  With both Frank Ragnow and Kenny Wiggins being full participants in practice, expect Benzschawel to make his way back to the inactives list.

EDGE Austin Bryant

Bryant’s NFL debut last week showed some promise in his limited action. The rookie was credited with one quarterback pressure, where he was able to make a hit on Washington’s Dwayne Haskins.

With both Trey Flowers and Da’Shawn Hand limited in practice, Bryant may have another opportunity to see the field this week.

Linebacker Jahlani Tavai

The last time the Lions faced the Bears, Tavai walked out of that game with three tackles and a sack. Despite his usage on-field going down drastically in recent weeks, the rookie could still have the chance to make some big plays. He’ll be used in a much more limited role, coming in as an extra linebacker in some situations. Expect the rookie to see the same success he had last time.

Cornerbacks Amani Oruwariye and Michael Jackson

One of the most pleasant surprises of the Lions’ 2019 seasons was the sudden emergence of Amani Oruwariye. After spending most of the season on the bench, the fifth-round pick found himself in the starting lineup against Washington, subbing in for an injured Rashaan Melvin.

In his first full game as a Lion, Oruwariye blanketed receivers, allowing just half of the passes that came his way, with an average passer rating of 18.7 against him.

With Melvin still listed on the injury report, expect this rookie to come in and contribute heavily on defense once again.

Fellow rookie cornerback Michael Jackson received his first snaps as a pro on special teams. If he is active again this week, his role isn’t expected to change.

Safeties Will Harris and C.J. Moore

For the third time this season, rookie Will Harris saw the field for every defensive snap in the game.

While he started the season strong, his skills in coverage have started to look like an issue. He has missed almost a fifth of the tackles he’s attempted this season and has allowed an average of nearly 12 yards-per-completion.

With Tracy Walker limited again with his lingering knee injury, Harris may be starting again this week. Hopefully, his struggles don’t show up in this matchup.

Undrafted rookie C.J. Moore has remained relatively quiet this season on defense but he’s shown some promise on special teams. With injuries at the safety position, expect Moore to be active again this week with a limited role on defense.