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Baseball Positions Are Starting To Lose Their Meaning

MLB has its own spin on the "positionless" trends found in other sports.

Pitch Movement, Spin Efficiency, and All That

What is the best technique for measuring spin …

Jayson Werth, Scott Boras, and Fiduciary Relationships

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

How the Mariners’ Request for Public Funding Is Different

The Mariners are asking for $180 million from King County …

Is Pitch-Framing Cheating?

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

Don’t Blame Hitters for All the Strikeouts

It's the pitching, stupid …

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.

Luke Heimlich and Relitigating the Past

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

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...

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

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 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 …

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?

Pitching Backward: What We Know About Spin Rate

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