Metric Explainers

Metric Explainers

Whiff+: A Look at Which Pitchers Dominate by Generating Swings and Misses

Whiff rate doesn't paint an accurate picture when it comes to measuring a pitcher's stuff. Whiff+ accounts for what whiff rate does not.

3 years ago The Analyst

Metric Explainers

What Is Possession Value (PV)?

Possessive Value assigns credit to individual players based on their positive and negative contributions on the ball. But how does it work?

3 years ago Jonny Whitmore

Metric Explainers

BIP+: Which Batters Do the Most Damage After Making Contact?

In this installment of a series on advanced baseball metrics, we look at what BIP+ reveals about Miguel Sano’s raw power and how Javier Baez could get back on track. For…

3 years ago Taylor Bechtold

Metric Explainers

Sequences and Possessions in Football

Stats Perform’s possessions framework strings together consecutive events into sequences in order to provide a more detailed picture of what’s happening on the pitch.

3 years ago Jonny Whitmore

Metric Explainers

Discipline+: Why Not Every Decision to Swing is Created Equal

We’re taking a close look at discipline+ to discover what it tells us about the versatility of Mike Trout, Juan Soto and Ronald Acuna Jr. For a look at which players…

3 years ago The Analyst

Metric Explainers

What Are Expected Assists (xA)?

Expected assists (xA) measure the likelihood that a given pass will become a goal assist based on several factors about the pass.

3 years ago Jonny Whitmore

Metric Explainers

Contact+: Which Hitters Are Baseball’s Best at Making Frequent Contact?

In this installment of a series on advanced baseball metrics, we look at what contact+ reveals about the greatness of DJ LeMahieu.

3 years ago The Analyst

Metric Explainers

Framing Runs: It’s Not About ‘Stealing Extra Strikes’

As part of our series on advanced baseball metrics, we examine what framing runs tell us about the game’s best pitch framers behind the plate.    Things turned ugly one…

3 years ago Taylor Bechtold

Metric Explainers

Strike+: Who Thrives on Racking Up Both Whiffs and Called Strikes?

While whiff+ offers a more thorough analysis of a pitcher’s stuff by determining the rate at which he generates swings and misses, strike+ takes that concept a step further. Ultimately, the goal…

3 years ago The Analyst