Japanese baseball officials admit to altering the baseball to increase offense

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Home runs and batting average have increased sharply in the NPB this season, and after months of denying that the ball had been altered in any way, Japanese baseball officials are admitting that they tinkered with it in order to “make the game more exciting” and increase offense:

Players and fans had repeatedly quizzed Nippon Professional Baseball (NPB) bosses after seeing a 40 percent rise in the number of balls that were slugged out of the park so far this season.

In April NPB said the specifications of their ball — each of which bears the signature of its commissioner Ryozo Kato — “have not been changed”, a statement that was repeated several times since.

But on Tuesday NPB came clean, saying they had asked manufacturer Mizuno to “adjust” the ball to give it greater bounce off the bat and demanded the company keep quiet about the switch.

Altering baseballs is not unprecedented in baseball history, of course. In 1930 offense made the so-called Steroid Era look like 1982 or something. Half the teams scored 900 runs or more and the average hitter in the American League — just the AVERAGE ones — hit .303/.360/.448. That winter baseball deadened the balls a bit, with the AL altering the stitching and the NL doing both that and adding a cover to its balls. Offense went down significantly in 1931, more so for the NL.

1987 is widely suspected to be another year in which the ball was altered. Baseball has never admitted to doing anything, but the season was an offensive aberration and unlike other eras of changing offense it was an outlier, with the next and previous years looking pretty similar and no other explanation that makes a lick of sense.

I strongly suspect that the baseballs were altered again in the 1990s. There were multiple explanations for increased offense at that time, including double expansion, much smaller parks, smaller strike zones, different hitting approaches and, of course, performance enhancing drugs, but I’ve always thought that the baseball had something to do with it too. Not that anyone ever wants to blame anything other than steroids.

But I think this NPB story shows that it doesn’t take much for offense to increase significantly. Sometimes just a change in the ball. Which league officials are inclined to deny.

Masahiro Tanaka throws a Maddux

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You do know what a Maddux is, right? In case you forgot, it’s a complete game shutout in which the starter throws fewer than 100 pitches. Friend of HBT Jason Lukehart invented that little metric and, because Greg Maddux is my favorite player ever, it’s pretty much my favorite stat ever.

In the Yankees-Red Sox game tonight it was Masahiro Tanaka doing the honors, tossing 97-pitch three-hitter in which he only allowed one runner to reach second base to beat Boston 3-0. He only struck out three but he didn’t walk anyone. He retired the last 14 batters he faced.

Chris Sale was no slouch himself, striking out ten in eight innings. He’s pitched great this year but he’s not getting any help. The Sox have only scored four runs in his five starts. Boston has scored only 13 runs in their last seven games. They’ve been shut out three times in the past seven. They scored more runs than anyone last year, by the way.

The game only took two hours and twenty-one minutes. Or, like, half the time of a Yankees-Red Sox game in the early 2000s. Progress, people. We’re making progress.

Shelby Miller has a tear in his UCL, considering Tommy John surgery

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Nick Piecoro of the Arizona Republic reports that Diamondbacks pitcher Shelby Miller has a tear in his ulnar collateral ligament and is considering undergoing Tommy John surgery. Surgery would end Miller’s 2017 season and would cut into a significant portion — if not all — of his 2018 season as well.

Miller sent his MRI results to Dr. Neal ElAttrache and Dr. James Andrews for second and third opinions, respectively. He could choose to rehab his elbow rather than undergo surgery, but that comes with its own set of positives and negatives.

Miller lasted only four-plus innings in his most recent start on Sunday and carries a 4.09 ERA on the season, his second with the Diamondbacks. His time in Arizona has not gone well.