Running back Correll Buckhalter took a step toward returning for a huge AFC West showdown against San Diego on Monday. Buckhalter, who missed Sunday's game against New England with an ankle injury, practiced with the team Wednesday, he was taking normal repetitions during the period of practice that is open to the media. Buckhalter isn't guaranteed to get his starting spot back, rookie Knowshon Moreno started last week against the Patriots and he leads the Broncos with 337 rushing yards.