BOURBONNAIS, Ill.JMarcus Webb is the starting left tacklefor now. Hell have some reps against the likes of elite rushers Elvis Dumervil and Von Miller when the Denver Broncos open the preseason at Soldier Field on Thursday.The competition between Webb and Chris Williams for the No. 1 job at left tackle is in fact in something of a holding pattern, however, with Williams shift to right tackle motivated in some measure by a desire to lighten the load on Gabe Carimis recovering right knee.I thought one guy Webb or Williams would really separate themselves and really jump out there, but that didn't really happen, said offensive coordinator Mike Tice. So for me, let's keep status quo, and see where the games take us.If there is a concern beyond neither Webb nor Williams stepping up, it may be that Williams has appeared to slump somewhat since the rotation reset was done last week.Williams, working at right tackle, was beaten convincingly by rookie Shea McClellin on consecutive pass rushes on Monday. McClellin put several moves together to register a simulated sack with an inside finish, then came back with a straight speed rush where he got the edge on Williams.With Gabes knee being sore a week ago, we had to get somebody over there that had some experience to take some reps off of Gabe because he was in a little bit of a bad way there for a couple of days, Tice said. We took some reps off him and it seems to have worked.How well it worked will play out a little more on Thursday night.