The Denver Broncos may be without defensive end Elvis Dumervil for Sunday’s home game against the Detroit Lions. Dumervil suffered a sprained right ankle in Denver’s overtime victory at Miami last Sunday. He is unlikely to practice this week and was walking around the team’s facilities in a walking boot yesterday. It’s another setback in an injury plagued season for Dumervil, who missed the first two games of the season after straining his shoulder in practice. Dumervil missed the entire 2010 season after tearing a pectoral muscle during the preseason. He led the NFL in sacks in his last healthy season in 2009. Also injured in Sunday’s game was running back Willis McGahee, who will miss one to four weeks with a broken right hand. McGahee had won the starting job away from Knowshon Moreno before getting hurt.