Josh Collmenter isn’t long for the Diamondbacks rotation

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Forget that Josh Collmenter had a 3.59 ERA in his 24 starts as a rookie last season. If many Diamondbacks fans had their way, he would have been demoted to the pen before 2012 even opened.

Those calls will only get louder now. Collmenter followed up a Cactus League season in which he went 0-4 with a 9.95 ERA by giving up six runs — five earned — in three innings Sunday against the Giants.

The case against Collmenter wasn’t personal, but Diamondbacks fans are undoubtedly excited to see what pitching prospects Patrick Corbin, Tyler Skaggs and, especially, Trevor Bauer can do. Much of Collmenter’s rookie success was credited to his deceptive windup, something that hitters figure to get more accustomed to this year. Collmenter throws just 86-89 mph and lacks a plus breaking ball to go along with his fine changeup, so if hitters start seeing the ball better against him, they’ll likely knock him around pretty good. The Giants certainly had his number today, with Buster Posey taking him deep and light-weights Gregor Blanco and Brandon Crawford picking up doubles.

It seems like only a matter of time before Collmenter is shifted to the pen. But the Diamondbacks will face an interesting decision when that happens. Corbin, Skaggs and Bauer are all in Double-A right now, and the team would likely prefer not to have to turn to any of them before June. Wade Miley might get the spot on a temporary basis. He relieved Collmenter today and pitched four hitless innings to get the Diamondbacks back into the game.

Ronald Acuna tops Keith Law’s top-100 prospect list

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ESPN’s Keith Law has released his annual top-100 prospects list. According to Law, Braves outfielder Ronald Acuna is the number one prospect in baseball.

After blazing through High-A and Double-A ball last season, Acuna was the youngest player in Triple-A in 2017. He was 19 years-old all season long and put up a fantastic line of .335/.384/.534 in 486 plate appearances at Double and Triple-A. He then went on to star in the Arizona Fall League, leading that circuit in homers. Law, who is not one to throw hyperbolic comps around, says, “if Acuna stays in center and maxes out his power, he’s going to be among the best players in baseball, with a Mike Trout-ish profile.”

Acuna, who is 20 now, is likely play the bulk of the season in Atlanta, even if he’s kept down at Triple-A for the first couple of weeks of the season to manipulate his service time, er, I mean to allow him to develop his skills more fully. Or something. Given the presence of reigning Gold Glove center fielder Ender Inciarte, Acuna is not likely to man center for the Braves this year, but Law says he’d be a plus right field defender, which could make the Braves outfield Death to Flying Things in 2018. At least when Nick Markakis is not playing.

Number two on the list: Blue Jays third base prospect Vladimir Guerrero Jr. As law notes, the name may be familiar but he’s not very much like his old man. Mostly because young Vlad can take a walk. Which is better, even if it’s nowhere near as fun as swinging at balls that bounce in the dirt first.

For the other 98, you’ll have to click through.