Features Check My Pick Verified Acca Builder Calculators

ALL SPORTS · 5 LEAGUES

Tools

Daily Picks179 Check My Pick Insights Bettor Guide

Sports

NCAA FootballSOON

NCAA BasketballSOON

League of LegendsSOON

Counter-StrikeSOON

duban

Find value
before the market does.

Model-driven betting research built for disciplined bettors. Every call logged before tip-off, never edited, graded in public.

Product

Features Daily Picks Check My Pick Insights Prop Finder My Stats

Sports

World Cup 2026 Tennis WNBA NBA Players

Trust

Verified Track Record Strategy Tracking Betting Calculators Bettor Guide Status Plans & Pricing Contact Privacy Settings

0Picks graded · Updated live

Logged before tip-off, never edited
Graded in public — nothing hidden
5 supported sports

duban is research and analysis, not betting or financial advice. Past performance does not guarantee future results. 21+. Bet responsibly.

© 2026 duban. All picks graded in public.All systems operational

Home Picks Stats Schedule

Betting Calculators

8 FREE TOOLS · THE MATH THE MODEL RUNS ON

Expected ValueIs your bet +EV? Your probability vs the price.Kelly StakeBankroll + edge → the growth-optimal stake.Unit SizeBankroll + risk profile → your unit and max bet.No-Vig Fair OddsStrip the book's margin to see the fair price.Odds ConverterDecimal ↔ American ↔ fractional ↔ implied %.ParlayCombined odds, payout — and the honest chance.Pick'em HoldWhat a "pick 2, win 3×" entry really keeps.HedgeLock a guaranteed profit on an open bet.