Nationals sign Edwin Jackson

The Washington Nationals have signed starting pitcher Edwin Jackson to a 1 year 10 million dollar deal. According to Fangraphs, Jackson has averaged a WAR of 3.73 over the last 3 years. Jackson is usually known for being pretty inconsistent, but that seems to be a misnomer when looking at key pitching stats, as his last 3 WARs have been 3.6, 3.8, 3.8, with FIP - of 96, 91, 89, with a little more variance of Adjusted PEs of 1.14, .09, and 1.22. With Jackson, he has pitched in so many different places that we should know what kind of pitcher he is without even using ballpark adjusted metrics. He has done an okay job keeping the ball in the ballpark in his career with a .99 HR/9IP rate. He has really improved his groundball rate over the last two years, with 1.55 and 1.4 GB/FB ratios in 2010 and 2011 respectively. He throws just a touch under 95 on his fastball on average, and has had very nice walk rates over the last 3 years. His SIERAs have been funky over the last 3 years, disagreeing with his FIPs big time. This is just a 1 year deal, so its not a long term risk. 10 million dollars actually seems slightly low according to Fangraphs WAR, and this seems to be a pretty poor deal for Jackson. This is not only a great deal for the Nationals, but it makes me wonder why 29 other teams weren't making this offer.