The basics: six years, $31 million. The intrigue: "The key to the deal is annual escalator clauses that increase Diehl's salaries between $750,000 and $1.1 million a year as long as he plays offensive tackle." 2007 was Diehl's first season at left tackle (he had played left guard previously), and the team was obviously happy with his performance -- but they've left themselves an out in case he slips.