Proj. bases — how many total bases we expect this batter to rack up tonight (single=1, double=2, triple=3, homer=4), from his recent form plus how he historically hits this pitcher's pitch types. 1.5+ is a good night; 2.0+ is a great one.
Odds of 2+ — how often batters in this tier actually reached 2+ total bases, measured from every graded day in the ledger. Not a formula — the scoreboard. A leading "~" means that tier doesn't have enough history yet and the number is still modeled.
Tiers — ELITE and STRONG are the plays. EVEN is average. FADE means avoid.
Tap a row — the colored bar is the pitcher's arsenal: wider slice = he throws that pitch more, brighter slice = this batter piles up more bases against it. A wide, bright slice is exactly what you want.
The + button — adds that batter's "2+ bases" as a leg in the parlay tray at the bottom, which multiplies your model's chances together.