While the Denver Broncos continued to look at prospective left tackles, their starter at the position last season headed to Buffalo for a visit. Trey Teague, who is an unrestricted free agent, was scheduled to fly to Buffalo on Thursday night and meet with Bills officials today. Coincidentally, Victor Riley, whom the Broncos brought in for a visit Wednesday, also was scheduled to arrive in Buffalo on Thursday night. Teague has a standing offer to return to the Broncos, but he is testing the market to establish his value. Riley, a starter with the Kansas City Chiefs, also has visited Cleveland.