The Baltimore Ravens quarterback situation became further muddled on Thursday when it was noticed that Robert Griffin III was the only quarterback participating in practice, according to multiple media outlets.
Joe Flacco, who has started every game this season, has missed practice all week with a hip injury, so his absence was not a surprise.
As a result, rookie Lamar Jackson was viewed as a possible starter in this week's game against the Cincinnati Bengals. However, Jackson also was absent from the practice field Thursday due to a stomach issue, ESPN reported.
Such an illness typically is not a long-term issue, so Jackson is a good bet to be ready for Sunday's game if needed. However, he did lose a day of valuable preparation time.
--Los Angeles Chargers defensive end Joey Bosa returned to practice this week, but it remains unclear whether he will play in Sunday's game against the Denver Broncos.
The Chargers do not have to decide yet, so they continue to monitor Bosa's progress. It may come down to a game-day decision.
On Wednesday, Bosa participated in practice for the first time since injuring his foot the week of the season opener. He was only a limited participant in that practice, though.
He said he has gone through "really intense" workouts the past month to try to regain his conditioning.
--The Detroit Lions' once-formidable receiving corps is looking a bit shaky at the moment.
Wide receiver Marvin Jones Jr. did not practice for the second straight day as he tries to recover from a bone bruise in his knee.
Jones has 35 receptions for 508 yards and five touchdowns this season. The five touchdown receptions lead the team, and he is second, behind Kenny Golladay, in receiving yards.
Last season Jones had 61 catches for 1,101 yards and nine touchdowns.
His status for Sunday's game against the Carolina Panthers will be determined on Friday, but he is considered questionable at the moment.
The Lions lost their top receiver when Golden Tate was traded to Philadelphia, and if Jones cannot play Sunday, the Lions will face some problems.
--Already expected to be without their top wide receiver, the Cincinnati Bengals also are dealing with an injury to their best running back.
Joe Mixon was a surprise addition to Cincinnati's injury report, listed as limited due to a knee injury. Mixon was not listed on the injury report Wednesday.
That puts the starting running back's status into question for Sunday's game at the Baltimore Ravens. The Bengals are expected to be without No. 1 wideout A.J. Green, who is dealing with a toe injury that forced him to sit out last week's lopsided loss against New Orleans.