Underdog Pick'em Edge Calculator

Build your Underdog Fantasy slip, enter your fair odds per leg, and instantly see expected value, ROI, and payout breakdowns for Standard and Flex entries.

How to use: Select a player, set the market, choose Higher/Lower, enter the UD line and multiplier (default 1x), then click Look Up to fetch fair probability from DMP. If DMP doesn't have odds for that prop, you can enter your own fair odds manually.

Entry Type

Flex requires 3+ legs

Entry ($)

Leg 1

Player

Market

Side

Line

UD Multi

Fair Odds

Leg 2

Player

Market

Side

Line

UD Multi

Fair Odds

Add at least 2 legs with fair odds to see results

What is EV for Pick'em?

Expected value measures your edge over the house. If your fair probability of winning each leg is higher than what the payout implies, the slip has positive EV. Over time, +EV entries are profitable.

Learn about EV

Standard vs Flex

Standard pays out only if every leg hits. Flex (3+ legs) still pays reduced amounts if you miss 1 or 2 legs. Flex has lower top-end payouts but higher hit rates.

UD Multipliers

Some picks on Underdog carry a boosted multiplier (1.25x, 1.5x, 2x). When that leg wins, your payout is scaled by the multiplier. Enter each leg's multiplier to see its true impact on EV.

Understanding vig