Pitching Backward: What We Know About Spin Rate

Diving into the treasure trove of data finds as many questions as answers.

The Siren Song of Statcast's "Expected" Metrics (For Pitchers)

BAM admits that its "expected" statistics were never designed to predict anything. Does it matter?

How To Beat The Shift - Baseball Prospectus

The Shift is dying under an avalanche of walks.

The Chemistry of Masking Agents

How do diuretics like furosemide, often used to mask PEDs, actually work …

Prospectus Feature: MLB Commission Confirms That The Baseball Has Changed

Following numerous studies, an MLB commission has confirmed that the baseball has changed since mid-2015.

The Home Runs Keep Increasing, But Are the Baseballs Different After All?

How has the baseball evolved over two centuries? Moderately, but notably enough to change outcomes.

How Sergio Romo and the Rays 'opener' strategy are impacting how pitching stats are tracked and viewed

The Rays' newest strategy could change a lot about how MLB stats are displayed by stat trackers

Ross Stripling has found an unusual path to success by...

"A very rare combination of extremely intelligent and gritty”: Dodgers righty Ross Stripling followed the numbers to formulate an unusual pitching strategy that's working for him—and for the Dodgers.

The Astros overhauled their scouting department. Are they a...

Since he was hired as the Astros general manager in December 2011, Jeff Luhnow has never been shy in...

Inside a major-league call-up: From the minors to the...

There are hundreds of transactions in a major-league season. This is how Mitch Walding became the 19,264th player in major-league history.

Luke Heimlich and Relitigating the Past

The debate over Luke Heimlich's past misses the discussion we need to have about …

Prospectus Feature: Winning at the Cost of Silence

Do we only care about little girls until we want to win baseball games?

Worst shifts in the league? Why Jake Arrieta may have a...

Jake Arrieta unloaded on the Phillies' defensive shifting after a "horseshit" sweep in San Francisco. He's spot on, according to some metrics assessing the team's use of shifts.

The hunt and the gather: The process leading up to Draft...

The amateur scouts who grind for 12 months to make a draft successful have something in common — and it’s also what draws them to the ballplayers they will end up pounding the table for.

How one tiny change to the baseball may have led to both the home run surge and the rise in pitcher blisters

After taking apart and examining twenty-six baseballs, a possible explanation for the rise in both home runs and pitcher blisters emerged: The laces in the newer baseballs are noticeably different.

Don’t Blame Hitters for All the Strikeouts

It's the pitching, stupid …

Baseball Needs to Do More About Sexual Violence

The game needs to do more at all levels, but particularly for youth athletes …

The Importance of Pride Month in MLB

LGBT people are a part of baseball's past and present. They're also a …

One Last Thing About Umpire Videos

A record of the dialogue between Terry Collins and Tom Hallion wasn't ever supposed …

Is Major League Baseball’s Domestic Violence Policy Working?

It's time to reexamine MLB's Domestic Violence Policy …

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Most Popular Topics

Scouting

The Astros overhauled their scouting department. Are they a...

Since he was hired as the Astros general manager in December 2011, Jeff Luhnow has never been shy in...

The hunt and the gather: The process leading up to Draft...

The amateur scouts who grind for 12 months to make a draft successful have something in common — and it’s also what draws them to the ballplayers they will end up pounding the table for.

The Shift

How To Beat The Shift - Baseball Prospectus

The Shift is dying under an avalanche of walks.

Worst shifts in the league? Why Jake Arrieta may have a...

Jake Arrieta unloaded on the Phillies' defensive shifting after a "horseshit" sweep in San Francisco. He's spot on, according to some metrics assessing the team's use of shifts.

Are Rays' Shifts Redefining Infield Defense?

In each of the last two seasons, Joe Maddon's Tampa Bay Rays did more infield shifting than any other team in the majors. But does it work? And are they taking things to a new level in 2012?

The Ball

Prospectus Feature: MLB Commission Confirms That The Baseball Has Changed

Following numerous studies, an MLB commission has confirmed that the baseball has changed since mid-2015.

The Home Runs Keep Increasing, But Are the Baseballs Different After All?

How has the baseball evolved over two centuries? Moderately, but notably enough to change outcomes.

How one tiny change to the baseball may have led to both the home run surge and the rise in pitcher blisters

After taking apart and examining twenty-six baseballs, a possible explanation for the rise in both home runs and pitcher blisters emerged: The laces in the newer baseballs are noticeably different.

Domestic Violence

Is Major League Baseball’s Domestic Violence Policy Working?

It's time to reexamine MLB's Domestic Violence Policy …

Roberto Osuna, the Blue Jays, and the Limits of Presuming Innocence

What nobody noticed is the difference in how the Blue Jays handled it …

The Other Side of a Roberto Osuna Trade

Roberto Osuna just got the third-longest domestic violence suspension in MLB history. Why are …

Sexual Assault

Luke Heimlich and Relitigating the Past

The debate over Luke Heimlich's past misses the discussion we need to have about …

Prospectus Feature: Winning at the Cost of Silence

Do we only care about little girls until we want to win baseball games?

Baseball Needs to Do More About Sexual Violence

The game needs to do more at all levels, but particularly for youth athletes …

Agents

Jayson Werth, Scott Boras, and Fiduciary Relationships

Jayson Werth says Scott Boras didn't call teams on his behalf. Boras says he …

Umpires and Umpiring

One Last Thing About Umpire Videos

A record of the dialogue between Terry Collins and Tom Hallion wasn't ever supposed …

Angel Hernandez and How Lawsuits Impact Baseball

Angel Hernandez should be allowed to keep being a bad umpire. Here's why …

Pitch Framing

Is Pitch-Framing Cheating?

Let's figure out whether the Rules allow pitch-framing, once and for all …

Legal Matters

Luke Heimlich and Relitigating the Past

The debate over Luke Heimlich's past misses the discussion we need to have about …

Would Chris Bosio Win a Wrongful Termination Suit?

The Tigers' fired pitching coach is threatening to sue the club …

Strikeouts

Don’t Blame Hitters for All the Strikeouts

It's the pitching, stupid …

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