BY NICK ST. DENIS
The Buffalo Bills are currently auditioning for roles on their offensive line, and the team upped the competition Sunday.
A couple hours before taking the field for their first training camp practice of 2013, the Bills announced the signings of Antoine Caldwell and Tony Hills, most recently of the Houston Texans and Indianapolis Colts, respectively.
According to the team's website, Caldwell, who has 40 games and 19 starts under his belt, is expected to compete with Doug Legursky and Colin Brown for the starting left guard job. Caldwell was drafted in the third round in 2009.
The less-experienced Hills doesn't have as much of a shot at earning a primary gig but will get some summer work with offensive tackle Chris Hairston currently on the Active PUP list.
Both Caldwell and Hills were in attendance at Sunday's practice, according to Chris Brown of BuffaloBills.com. Buffalo released offensive lineman Chris Scott Saturday.
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