Steelers Timmons, Kirschke will sit out Monday's game in DenverBy Mark KabolyTRIBUNE REVIEWSaturday, November 7, 2009 Already highly likely to be without safety Ryan Clark for Monday night's game against Denver, the Steelers will also be missing two more starters on the defensive side of the ball.Inside linebacker Lawrence Timmons and defensive end Travis Kirschke missed practice for the third consecutive day today and each said after the final tune up before Monday's game that they will not play against the Broncos."I am not going to be able to play," said Timmons, who is nursing an ankle injury he suffered two weeks ago against Minnesota.Kirschke, who already is filling in for the injured Aaron Smith at left end, has a torn left calf muscle that hasn't responded well enough over the past two weeks for him to give it a go Monday."No, I am no going to be able to go," Kirschke said. "I am just going to have to be patient."Timmons will be replaced by Keyaron Fox while veteran Nick Eason will start for Kirschke.As for Clark, he would not comment on whether or not he will play against the Broncos, but all indications point toward him sitting out even though he was listed on the today's practice report as a full participant.The Steelers say they won't announce whether Clark will play in Denver until Monday night.Clark nearly died following a game in Denver two years ago because of a rare blood disorder that is aggravated by playing in high altitude.He had his spleen and gall bladder removed during separate operations, and he lost 30 pounds after the Oct. 21, 2007, game in Denver, which ended his season. Many of Clark's teammates told him he should skip the game.