Jay Cutler sits in Bears' opener

CHICAGO -- Chicago Bears quarterback Jay Cutler warmed up and dressed but did not play in his team's preseason opener against the Denver Broncos on Thursday, a day after his fiancée, Kristin Cavallari, gave birth to the couple's first child.

The birth of Cutler's son, Camden Jack Cutler, came on the team's day off, and there was speculation -- given the fact the starters would receive relatively little action -- the quarterback wouldn't play. But Cutler showed up on the field in full gear, tossing passes to receivers nearly a half hour before Thursday night's kickoff in the exhibition opener against the Denver Broncos.

"(We) probably made the decision (to sit Cutler) after he warmed up," Bears coach Lovie Smith said after a 31-3 loss to Denver. "Of course he had a lot of things going on this week, and we wanted to take a good look at Jason (Campbell) with our first line and Josh (McCown). So it wasn't really in the plan for Jay to go out there. He'll get more reps this coming week."

Cutler manned the sidelines along with fellow stars Matt Forte and Julius Peppers after heavy rains delayed the game and made for a wet field. Brian Urlacher was excused for personal reasons, coach Lovie Smith said before the game.

Campbell started for Cutler, completing 4 of 5 passes for 13 yards before being relieved by McCown in the second quarter. McCown completed 6 of 10 passes for 56 yards and was followed by rookie Matt Blanchard.

"We talked about it Tuesday there might be a chance (Campbell would start), not knowing for sure what day Jay's baby would come out," Campbell said. "Of course he still wanted to play, but we felt as a group and the coaches made the decision that this is an exciting time in his life, and he really needed to take the time and enjoy."

Michael Bush started for Forte and fumbled in Bears' territory, setting up a field goal by Matt Prater and a 3-0 Denver lead.