Yu Darvish thinks major league teams should go with a six-man rotation

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The New York Times reports on Yu  Darvish’s comments to the Japanese media last week about arm injuries and stuff. Upshot: he’s all for a six-man rotation:

. . . Darvish said he believed that a shift to a six-man rotation by major league teams could significantly reduce the stress on all those elbow ligaments by giving pitchers a critical extra day to rest and limiting their starts . . . Speaking to Japanese reporters in Minneapolis last week, he said, “If you really want to protect players, we should add one more spot to the starting rotation.”

He got some backup from teammate Colby Lewis who spent two years in Japan and was used to the once-a-week pitching schedule (Japanese teams play six days a week and have six-man rotations).

Eh. Could it reduce pitcher injuries? It’s possible. There is some, albeit no definitive evidence that elbow injuries are less frequent in Japan. But there are also tradeoffs in terms of (a) giving less effective pitchers more innings; and (b) requiring teams to devote yet another roster spot to a pitcher. This in an age when teams are already frequently playing games with only two position players on the bench plus a backup catcher they won’t use unless they’re forced to. Sure, ideally you’d think teams would get rid of a reliever for an extra starter, but when was the last time a manager gave up a reliever even when it made sense? Heck, they’d sooner play infielders in the outfield than get rid of that 13 or 14-man pitching staff/security blanket.

There would have to be major roster rules changes to accompany such a thing, as they have in Japan. There rosters are 28-men deep instead of 25 and a couple of players are activated/deactivated on a game-by-game basis. If you do that here maybe it helps, but it still doesn’t solve the problem of using a guy who, today, couldn’t crack your rotation as a once-a-week starter.

If the injury/start frequency evidence got more definitive, sure, you do what you do in order to save your resources. But until then it’s a pretty tall cost to go with a six-man rotation on the regs.

Report: J.D. Martinez signing delayed by medical issue

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The Red Sox reportedly inked free agent outfielder J.D. Martinez to a five-year, $110 million contract last Monday, but there appears to be a slight hitch in the process. According to a report from Evan Drellich of NBC Sports Boston, the team is sorting through a medical issue that has delayed the signing. The specific nature of the issue has yet to be revealed, though Drellich adds that both the team and agent Scott Boras have involved additional medical experts in the process.

For what it’s worth, Martinez remained fairly healthy during his 2017 run with the Tigers and Diamondbacks. The 30-year-old outfielder spent six weeks on the disabled list after suffering a right foot sprain during camp, but managed to make a full recovery by mid-May and didn’t relapse once throughout the rest of the year. Of course, the medical issue holding up his new contract could be of an entirely different nature.

While spring training is already underway for the rest of the Red Sox, club manager Alex Cora doesn’t appear too concerned by Martinez’s absence — yet. “The thing I can do is my thing,” he told MLB.com’s Ian Browne. “My job here is to show up every day and get ’em ready.”