Herbert (hand) was a limited participant in Thursday's practice.

Herbert didn't report any setbacks with his fractured left hand while playing through the injury in Monday's 22-19 overtime win over the Eagles, with the quarterback telling Kris Rhim of ESPN.com on Wednesday that postgame X-rays came back "clean for the most part." The signal-caller had underwent surgery on his non-throwing hand just one week before the matchup with Philadelphia and completed just 12 of 26 passes for 139 yards, one touchdown and one interception in the victory. However, Herbert made up for the lackluster passing performance by carving up the Eagles on the ground, running for a season-high 66 yards on 10 carries. Though he's had his reps capped in both of the Chargers' first two Week 15 practices, Herbert still looks on track to start Sunday's game at Kansas City.

Cook is likely to start Sunday's game against the Jaguars, Rich Cimini of ESPN.com reports, as Tyrod Taylor (groin) and Justin Fields (knee) both remained sidelined at Thursday's practice.

Cook has handled first-team reps in practice while preparing to make his first NFL start Sunday at Jacksonville. Taylor and Fields both appear likely to sit out Sunday's game. The Jets signed Adrian Martinez, whom Cook beat out for a spot with the team after the preseason, to their practice squad Wednesday. Cook saw his first regular-season NFL action in relief of Taylor in the Jets' Week 14 loss to the Dolphins.

Lawrence (ankle) was a full participant in Thursday's practice.

Lawrence was a surprise inclusion on the Jaguars' initial Week 15 injury report after he was a limited participant Wednesday due to an ankle issue, but his ability to take full reps a day later clears up any lingering doubt about his availability for this Sunday's game versus the Jets. During the Jaguars' ongoing four-game winning streak, Lawrence has completed 65 of 109 pass attempts (59.6 percent) for 882 yards (8.1 YPA), eight touchdowns and four interceptions while adding 79 yards and a score on 17 carries.

Smith (right shoulder/back) remained sidelined at practice Thursday, Ryan McFadden of ESPN.com reports.

On Wednesday, NFL Network's Ian Rapoport indicated that Smith is considered unlikely to start Sunday's game against the Eagles, and back-to-back 'DNPs' logged Wednesday and Thursday by the QB support that notion. If Smith is indeed unavailable this weekend, Kenny Pickett would be in line to make his first start of the season.

Trubisky (illness) didn't practice Thursday, Joe Buscaglia of The Athletic reports.

If Trubisky doesn't return to full participation Friday, he will likely carry an injury designation into Sunday's game against the Patriots. Practice squad quarterback Shane Buechele would work as the backup to Josh Allen if Trubisky's unable to suit up Sunday.

Fields (knee) wasn't spotted at practice Thursday, Rich Cimini of ESPN.com reports.

The same applies to Tyrod Taylor (groin), leaving Brady Cook and practice-squad member Adrian Martinez to handle the Jets' QB reps in Thursday's session. Friday's practice thus looms large in terms of the team's Week 15 signal-caller plans, but at this stage looming back-to-back 'DNPs' cloud the statuses of both Fields and Taylor.

Taylor (groin) wasn't spotted at practice Thursday, Rich Cimini of ESPN.com reports.

Neither was Justin Fields (knee), so both Taylor and Fields have opened Week 15 prep with consecutive DNPs. Brady Cook has been handling first-team reps in practice, and the undrafted rookie out of Missouri looks like the favorite to start Sunday's game against the Jaguars. Taylor or Fields could reenter the starting mix by practicing in any capacity Friday.

Rourke (knee) practiced in full Wednesday.

Rourke has been sidelined for his entire rookie season after undergoing surgery to repair his knee Jan. 8. He was originally expected back for training camp, though his recovery has clearly taken significantly longer. Rourke was designated to return Monday, so it's unclear if he'll be activated for a Week 15 matchup against the Titans.

Herbert (left hand) was limited at practice Wednesday, Eric Smith of the Chargers' official site reports.

Herbert, who sustained a fracture in his left (non-throwing) hand during Week 13 action, was able to play in Monday's 22-19 overtime win over the Eagles, and while he completed just 12 passes and was sacked seven time in the contest, he wound up as the Chargers' leading rusher with 66 yards. Looking ahead to this weekend's game against the Chiefs, Herbert noted Wednesday that he's in a healthier spot than he was this time last week. "I think for the most part, it's gotten a lot better," The QB said of his injured hand. "I feel like my grip strength has gotten better and just being able to use it has gotten better too."

Jackson was held out of Wednesday's practice to rest and isn't listed with any injury for Week 15.

The Ravens have listed Jackson with various lower-body injuries this season, including last week after his foot got stepped on during practice. He appeared to have his usual mobility during Sunday's 27-22 loss to Pittsburgh, but it wasn't enough to turn things around for the Ravens and their disappointing offense. On paper, Jackson's Week 15 matchup at Cincinnati is about as good as it gets. However, Jackson finished with no TDs and three turnovers in a home loss to the Bengals just two weeks ago.