Cubs left-hander Shota Imanaga was set to take the ball for a start against the Cardinals last night, but after rain caused the game to be postponed until July he’s seen his start pushed back until the club’s game against the Brewers on May 29. That scheduling change will give Imanaga a whopping ten days rest between his most recent start against the Pirates last week and his next, but Patrick Mooney of The Athletic writes that manager Craig Counsell made clear that Imanaga’s extended layoff wasn’t injury related, instead describing the decision as a “proactive” effort to manage his workload amid the 30-year-old lefty’s workload.
It’s not necessarily news that the Cubs are managing Imanaga’s workload, as he’s started just two games on regular rest so far this season. By inserting additional rest day’s into the lefty’s schedule, the club is hoping to soften Imanaga’s transition from the typical NPB schedule, where teams utilize six-man rotations with one day off a week allowing starters to pitch just once a week, to MLB’s five-man rotations with less frequent days off. It’s hard to argue with the results of Chicago’s plan, as Imanaga has been the best starting pitcher in the sport by the results this season and has authored a historic beginning to his big league career: his microscopic 0.84 ERA is both the lowest in baseball this year and the lowest of any rookie pitcher’s first nine starts in the modern era.
Imanaga’s peripheral numbers largely back up his stellar performance to this point, as well; his 27.8% is the 13th-best figure in all of baseball this year among qualified starters, while his 4.3% walk rate places him ninth. Only Chris Sale, Jack Flaherty, and Pablo Lopez have struck out more batters while walking fewer than Imanaga this year, leaving the 30-year-old’s complex $53MM guarantee with the Cubs appearing to be one of the biggest steals of the offseason a third of the way through the 2024 campaign.