Tag Archives: MLB rule changes

Atlantic League Mound Movement Results Are Not As Noticeable As Expected

Earlier this year, there was an uproar in the baseball world when it was revealed that the Atlantic League would go ahead with MLB’s experimental movement of the mound.

When Indy Ball Island first reported the change in August, players were concerned about how much it would change the game and if the move would ultimately injure pitchers.

There were even a few players who ended up on the inactive list or were contemplating retirement over their concern and issues.

It was also rumored that if players or coaches were to speak out negatively about the changes, they would be banned from playing in the MLB or in any of the partner leagues. Clearly, the MLB was expecting a lot of outrage when they decided to continue with their experiment.

But as the New York Post reported, all of the concern was blown out of proportion as not much has really changed in the Atlantic League.

There are a few slightly noticeable differences…

Courtesy of Long Island Ducks & The New York Post

From the adjustment’s implementation on Aug. 3 through Sept. 19, as per MLB (reported by the NYPost):

• Run scoring is up by .22 runs per game.

• Slugging percentage is up 26 points, a by-product of home runs being up from 2.9 percent of all outcomes to 3.6 percent. “I think that’s probably the most meaningful thing that has happened,” Sword said. “Twenty points of slugging is not a lot, but directionally, it’s what we were hoping for.”

• Strikeouts are up a tick, from 18.3 percent to 18.4. “I couldn’t explain that one to you,” Sword said In conjunction with that, the batting average on balls in play has dropped from .324 to .320.

• There’s a “slight increase” in the percentage of fastballs thrown and a “very small decrease” in the number of sliders and curveballs thrown.

But overall, the one foot increase from the mound to the plate seemed to bring little changes and no directly reported injuries (that I have seen) – a big concern of a lot of players over a month ago.

Most players, pitchers and hitters alike, didn’t seem to notice.

Said Scott Harkin, who pitched six innings of one-run ball for the Ducks that night, picking up a 4-2 win over the Southern Maryland Blue Crabs: “Honestly, I don’t even notice it.”

Said Ducks outfielder LJ Mazzilli: “I think a lot of people got ahead of themselves before it actually happened. They really were opinionated early on, and I was just trying to take it in and let me see for myself. And then as soon as I got in, that first game, that first fastball I saw, it was like the exact same as what I’ve been seeing my whole life. I was like, ‘This is not as crazy as people were making it seem.’ ”

NY Post

And even when some pitchers reported a slight difference, such as Long Island Ducks RHP Joe Iorio, he was able to overcome it quickly because that’s always the goal of the game.

Ducks pitcher Joe Iorio, a native of West Islip, said he had to adjust his arm slot to throw his off-speed pitches: “I’m trying to get it to a different spot now, because he’s a foot back. The hitter obviously has a little more time to see it.”

Yet Iorio added: “It’s definitely an adjustment, but at the end of the day, we’ve been pitching our whole lives, so you feel like you can figure it out pretty quickly. But once you get in the game, it’s a constant adjustment, and that’s pitching, anyway. Whether it’s the regular distance or not, you’re always adjusting and trying to fine-tune your pitches.”

NY Post

If you would like to read more about the effects and responses to the movement of the pitcher’s mound or about the other rule changes put into place in the Atlantic League, check out Ken Davidoff’s in-depth article, MLB’s mound experiment an underwhelming minor league innovation, from the New York Post HERE.

Movement of Pitching Mound Already Causing Issues Within the Atlantic League

The Atlantic League has reached the halfway mark in their season…

And with that milestone, the pitching mound is set to make it’s move.

Two years ago, the MLB announced that they would experiment with rule changes in the Atlantic League, one of which being to move the pitching mound back to 62 feet 6 inches.

When Rob Manfred, the MLB commissoner, was interviewed by NBC Sports in an article from March 2019, he didn’t seem too concerned about the pitchers:

Baseball also is using the independent Atlantic League for experiments, such as increasing the distance from the mound to home plate to 62½ feet from 60 feet, 6 inches. When Kay suggested pitchers would get injured, Manfred quipped: “That’s why we’re doing it in the Atlantic League.”

NBC Sports

There was plenty of backlash and concern of injury from players and teams, and ultimately, the league did not move the mound in 2019.

Last year, the Atlantic League did not play due to the COVID-19 pandemic, so any new experimental rule had to be put on hold again.

However, the Atlantic League is back in full swing this year, and it appears as though MLB and the Atlantic League will go through with the moving of the mound starting tomorrow (August 3rd).

The new distance – 61 feet 5 inches – will be put into place for the second half of the season… with dire consequences if a player refuses to play.

The goal is to give the hitters a better chance of hitting due to the increasing velocity in pitches. The moving of the mound at the halfway point will be used to have two separate sets of data, a control group at the normal distance for the first half of the season and an experimental group with the new distance for the second half of the season.

But what about the players and teams that are still concerned with injuries (not to mention the logistics for a team having to literally move a mound that has been in place since the stadium was built).

Indy Ball Report (@indyballpod on Twitter) has reported on the topic as well.

I believe that the “grace period” suggested in the above report may have ended at 11:59pm last night (August 1st).

A list of Atlantic Transactions can be found HERE although I do not know how complete they may be.

And if you’re looking for an honest opinion on what is happening, it doesn’t appear as though you will get it from any of the managers and coaches involved in the league.

If there is one bright spot in all of this, JJ Cooper did report in April 2021 that since the reports of moving the mound came out two years ago, there has been research done on pitchers and mound distance from an injury standpoint. Baseball America reported:

Since that 2019 proposal, there has been research that may allay some of the injury concerns. Dr. Glenn Fleisig and the American Sports Medicine Institute conducted a randomized study that found that pitchers’ biomechanics did not change when they threw from the traditional 60.5 feet, 62.5 feet or 63.7 feet.

In that study, 26 college pitchers were asked to throw five fastballs each from the three different distances in a randomized order. The study found their mechanics were not altered by the differences in distance.

The summary of that paper, published in ScienceDirect, stated that “No significant differences in pitching kinetics and kinematics were observed among the varying pitching distances. Ball velocity and strike percentage were also not significantly different among the pitching distances, however, the duration of ball flight and horizontal and vertical break significantly increased with pitching distance … In conclusion, it is unlikely that moving the mound backwards would significantly affect pitching biomechanics and injury risk; however, the effects on pitching and hitting performance are unknown.”

But that’s just one study of college level pitchers…. should professional pitchers really be asked to use their arms and their careers as an experimental game for the MLB? Especially when refusing will not allow them to compete in any top league in the United States or Canada thanks to the top independent leagues all becoming partner leagues over the last year.

Indy Ball Island will continue reporting on this issue as the story plays out.