The Arizona Diamondbacks, who were thought to be dealing with a surplus of starting pitching as recently as six months ago, have recalled right-hander Chase Anderson to take the place of organizational filler Mike Bolsinger, two pitchers who were not in their plans for this season. It is uncertain what Anderson's role with the Diamondbacks will be. He has been primarily a starter in the minors, but as Jim McLennan of AZSnakePit.com writes, the Diamondbacks won't need a fifth starter for a few weeks.
Calling Bolsinger a filler and Anderson not one is somewhat hypocritical given that they are the same age (26), but Anderson has had more success in the minors, including a strong stint in the Arizona Fall League in 2012. He was dominating Double-A this season to the tune of a 0.69 ERA, but it should be noted that he was back in Double-A largely because of his struggles in Triple-A last year.
You need to know two things about Anderson - he throws a ton of strikes and he has a great change-up. Nothing else about him is terribly exciting, but those two facts give him a chance to stick as a back-of-the-rotation starter. He could be especially effective his first time through the league before there is a lot of video or credible data on his tendencies, as his change-up surprises unsuspecting hitters.
Anderson can be a useful arm for the Diamondbacks, and is a useful guy to have in an organization. He's not a guy the Diamondbacks are going to pencil into their rotation for the next decade, but having a guy in the minors who can come up and give you useful innings when needed, whether out of the bullpen or in the rotation, is pretty handy.
And that's what Anderson is. He's not going to help the Diamondbacks get out of last place and he's not a long-term solution, but he's handy to have around and he'll be better than Bolsinger.