Danny Kanell, who performed admirably in place of injured Steve Beuerlein last week, missed Friday’s practice with the flu, leaving the Broncos with one healthy quarterback for Sunday’s game at Baltimore.
Jackson took all the snaps Friday, and he said he was coming down with a cold. Kanell, who was vomiting and experiencing other symptoms of the flu, was given intravenous fluids.
Kanell is listed as probable on the injury report, though coach Mike Shanahan said it was uncertain if he would be available Sunday.
“We’ll see how he is in a couple of days,” Shanahan said. “He’s a little bit dehydrated. We gave him some IVs, and hopefully he’ll be all right by game time.”
Starter Jake Plummer is out with a broken left foot and backup Beuerlein was placed on injured reserve this week after breaking the pinkie on his throwing hand in Sunday’s 28-20 loss at Minnesota.
Kanell was expected to start the next two games until Plummer returned. The Broncos signed Jackson on Wednesday as Kanell’s backup. Wide receiver Rod Smith is Denver’s emergency quarterback.
Jackson was cut by the team two months ago. In his previous three seasons in Denver, he played in four games, completing 7 of 13 passes.
Kanell, whose last start came with the Atlanta Falcons in 2000, led the Broncos on two scoring drives Sunday and had them moving again before the final drive stalled, finishing 12-of-18 for 104 yards and a touchdown.
The Broncos have other holes to fill after a rash of injuries the past two weeks.
Outside linebacker Ian Gold has been lost for the season because of a knee injury two weeks ago. Denver also will be without starting left tackle Ephraim Salaam for at least two games following knee surgery.
“I know everybody’s antsy, and by Denver Broncos standards everybody’s like, ‘It’s time to panic’,” Broncos strong safety Nick Ferguson said. “No. It’s not time to panic. Now’s the time to come together.”
Baltimore is still in first place in the AFC North, but its the only division that does not have a team with a winning record.
Rookie quarterback Kyle Boller is coming off his best game with the Ravens, but is dealing with the pain of a sprained left shoulder.
Boller went 15-of-27 for 302 yards and two touchdowns Sunday in the Ravens’ 34-26 loss to the Cincinnati Bengals. The shoulder injury occurred in the fourth quarter, but Boller didn’t miss a down and expects to start this Sunday.
Boller’s 104.2 quarterback rating against the Bengals more than doubled the 46.2 mark he brought into the game. But he lost two fumbles and threw an interception to put the Ravens in a 24-7 hole at halftime.
If nothing else, Boller has made positive strides during his first two months as an NFL quarterback.
“Game by game, he’s getting better,” Ravens wide receiver Frank Sanders said. “I definitely see him improving.”