ENGLEWOOD, Colo. -- Denver Broncos quarterback Trevor Siemian was held out of practice Wednesday due to a foot injury and his status Sunday for the game against the Jacksonville Jaguars is in question.

Broncos coach Gary Kubiak called the injury "a foot sprain,'' and Siemian has worn a walking boot on for the past two days.

"You know what? It's just something he came out of the game and very, very sore Monday morning, kind of swelled up on him and [head trainer Steve Antonopulos] thought it was best to put him in a boot for a few days,'' Kubiak said. "... We'll see where he's at tomorrow.''

Siemian was injured in the Broncos' first possession of overtime Sunday in a loss to the Kansas City Chiefs. Siemian is believed to have been injured on a 1-yard scramble in the Broncos' field goal drive to open overtime.

Chiefs outside linebacker Justin Houston tackled Siemian from behind on the play.

"[I] kind of woke up the next morning and was a little sore,'' Siemian said, adding that he felt just "kind of funny'' immediately following the play. Siemian finished out the game and had a career-most 368 yards passing on the night to with three touchdowns.

Broncos quarterback Trevor Siemian took a number of big hits in Sunday's loss to the Chiefs, such as this one from linebacker Justin Houston. AP Photo/Joe Mahoney

At 7-4 the Broncos are in the tightest of battles for a playoff spot with five games remaining in the regular season. At the moment the Broncos are the seventh seed in the AFC playoff picture given they are in third place in the AFC West and the Miami Dolphins (7-4) currently have a better AFC record.

If Siemian can't play against the Jaguars, rookie Paxton Lynch would get his second start of the season. Lynch started the Broncos' Week 5 loss to the Atlanta Falcons when Siemian had a left shoulder injury.

Siemian was sacked five times in the game and took several other big hits. He has taken his share of punishment this season as the Broncos' offensive line has struggled at times. He has been sacked 13 times in the last three games.

As he did when Siemian was recovering from the shoulder injury, Kubiak said Wednesday that Siemian could be held out of practice all week and still play against the Jaguars if the the team feels the quarterback has sufficient mobility to play.

"Trevor could play without practicing,'' Kubiak said. "He's really, really bright.''

"[I'm] a little sore today, nothing too crazy, just a little sore,'' Siemian said. "... Just want to put as much into each day getting better as I can. I think if I can play, there isn't going to be any limitations on what I can do.''

Asked how many days he expected to wear the walking boot this week, Siemian said; "Hopefully not too many.''

The Broncos are 7-3 in Siemian's 10 starts this season and he's thrown for 2,396 yards to go with 15 touchdowns and seven interceptions.