The Arizona Diamondbacks have avoided arbitration and agreed to terms with right-handed pitcher Edwin Jackson on a two-year contract.As announced by D-backs Executive Vice President and General Manager Josh Byrnes, consistent with team policy, terms of the agreement were not disclosed. Jackson had sought $6.25m in arbitration; the club had filed at $4.6 million. Nick Piecoro says Jackson will make $13.35 million over the two years: $5m this year (including an 800K signing bonus) and $8.35m in 2011. Said Byrnes: "There always is (risk). With every deal we sign we tell the players there’s a chance you’re going to overperform the contract and a chance you’ll underperform. On a two-year basis, obviously it’s easier to assess what’s going to happen on a shorter time frame. We’re happy to do it. Edwin’s starting to build some momentum. He’s a young, healthy pitcher so we felt it was a sensible outcome."