Stolen Base Props

A stolen base prop asks whether a runner will swipe a bag — posted as Stolen Bases 0.5at a plus-money price, because most players don’t attempt a steal on a given night.

A chain of conditions

A steal needs several things to line up: the player has to be a base-stealer, has to reach base first, get the green light, and pick a pitch to go. Break any link and the attempt never happens — which is why steals are rarer and lumpier than a hitting prop.

What drives the projection

• Speed & aggressiveness — the runner’s steal rate and how often they’re given the green light.
• Reaching base — no on-base, no steal; on-base skill is a hidden input.
• The battery — the pitcher’s time to the plate (slow, or with a big leg kick) and the catcher’s arm.
• Game state — teams run more in close, late games and less in blowouts.

Our model regresses a thin steal sample hard toward a stable rate, so the number on the stolen basespage doesn’t overreact to one hot week on the basepaths.

Respect the variance

Because a steal is rare and binary, single-game results are almost all noise — even league leaders go multi-game stretches without one. Lean on the season-long hit rate at the line and the game log rather than a recent burst, and read variance and sample size.

Finding value

The plus-money price makes the no-vig fair odds lens essential — judge whether the payout beats the real chance, the same expected-value logic behind the edge board. Never chase the plus number, and size small with bankroll management in mind.

Frequently asked