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Coming into the season, there were plenty of question marks surrounding the Twins bullpen, rebuilt in the wake of an unimpressive 2017 campaign.
Hildenberger didn't seem to be one of them, at least not from my view.
The formula he deployed very successfully as a rookie was an extremely reliable one: ground balls (58.8% GB), strikeouts (9.4 K/9) and control (1.3 BB/9). Combine these three components, and you've got an almost unassailable recipe for consistently getting hitters out. These are the same strengths that carried Hildenberger through the minors, where he posted a 1.57 ERA in four seasons.
The right-hander's signature skills were noticeably amiss in spring training, where he walked four hitters and surrendered five homers in 12 innings. Last year with the Twins, he allowed only four homers and four unintentional walks in 42 innings.
But, it's spring training. Struggles during the exhibition slate don't always — or even often — transfer to the regular season. Following one of the righty's rough Grapefruit League outings, I asked Paul Molitor if something seemed off to him about Hildenberger, given the sudden and odd tendency to cough up free passes and long balls.
The manager acknowledged that his staff had noticed issues in the sidearmer's delivery.
"He's trying really hard to make some adjustments," Molitor said. "I think there have been some things that Garvin (Alston) and Eddie (Guardado) have been looking at to try to get him back mechanically to where he was last year. I think there are some things that are a little bit off. If you're out there thinking about mechanics you're probably not going to make very good pitches."
Despite Hildenberger's 7.50 ERA and 1.92 WHIP in 12 Grapefruit League appearances, the Twins never seemed to give much thought to leaving him off the roster, which isn't surprising. He was one of Molitor's most vital and trusted weapons after joining the roster in 2017, accruing the second-highest WPA of all relievers on the staff. And hey, it was only spring training.
Unfortunately, in this case, the distressing aspects of an ugly spring have carried over into the games that matter. It is apparent that Hildenberger is out of whack. In just 10 innings, he has already allowed three homers and three unintentional walks — again, he totaled four of each in in 42 frames with Minnesota last year. His ground ball rate is down from 58.8% to 39.4%. Swinging strikes are down from 11.8% to 9.0%.
In some ways, the Twins have bigger fish to fry — as of now, Rodney is the lunker of the day. But whereas most members of the bullpen are merely short-term cogs, Hildenberger is key to the big picture. What he brings when he's on his game is extremely difficult to replace. The Twins need him to become entrenched as a quality option in their pen. Right now he's a far cry from that.
What would you do? Send him to Triple-A to work out the kinks? Let him keep trying and fight through it in the majors, with help from Alston and Guardado?







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