LT Ryan Clady, RT Orlando Franklin
Winston Justice, Vinston Painter
Ryan Clady missed 14 games in 2013 due to injury; Chris Clark ended up protecting Manning's blind side for the remainder of the season.
Clady will return in his starting left tackle role in 2013. Orlando Franklin will continue to start at right tackle for the fourth straight season.
Winston Justice was signed after Clady was lost for the season in September. He ended up playing in four games for the team.
Vinston Painter was on the Broncos practice squad for the entire 2013 season.
Considering Justice was signed merely as a street free agent following Clady's injury two games into the NFL season and also taking into account that he'll be 30 years old this season, it's a realistic possibility the Broncos draft a tackle during the NFL draft and release Justice.
Painter was a sixth-round draft pick by the Broncos in 2013. Whether he makes the roster come September will all depend upon his development in training camp.
RG Louis Vasquez, LG Unknown
Louis Vasquez had a strong first season in Mile High, as he made his first Pro Bowl and was elected to his first All-Pro team in 2013.
At the current moment, the Broncos really don't have any player on the roster who is suitable to be the team's starting left guard. Due to Zane Beadles signing with the Jacksonville Jaguars during free agency, the Broncos will have to find a new starting left guard through the NFL draft.
C Manny Ramirez
Manny Ramirez had spent his entire NFL career as a guard up until center Dan Koppen tore his ACL during 2013 training camp. The Broncos shifted Ramirez from right guard to starting center.
It may have been the best decision of Ramirez's career.
Ramirez had a solid campaign as the Broncos' starting center and will return in the same role in 2014.