Jason Marquis is a durable, veteran pitcher who can be counted on to throw 200 league average innings per year. It's not super-sexy, but it's quite valuable, and the Nationals desperately needed a guy who can do what Marquis has done over the last few years.Marquis is a groundball pitcher who lives off his hard, sinking, two-seam fastball. He throws the pitch in the low-90s, and when he can consistently place the pitch at the bottom of the strikezone, you see a ton of groundballs pounded into the infield. If he's wild and falls behind, he can get hit hard, like any pitcher can, but guys like this have an even greater tendency to seem either great or terrible, because there aren't many pitches that are easier to hit than elevated 90-mph two-seam fastball. So you're warned, there will be...

Read more at the source of this article