RACHEL KIM
BETTING MATH, ANALYTICS, GUIDES
Rachel is a former projections analyst who got tired of vibes-based betting content. She writes the math explainers she wishes she'd had as a rookie: odds, expected value, closing line value, and why sample size beats hot streaks every time.
“If you can't show the math, it's marketing.”
GUIDE
Jul 03, 2026
A betting line is just probability wearing a costume. Once you can undress the number, every price and every capper record gets easier to judge. Worked examples for all three odds formats, plus the vi
READ MORE →
GUIDE
Jul 03, 2026
A two-leg parlay at -110 pays +264 against true odds of +300, which nearly doubles the book's hold. I'll walk you through the arithmetic, and through the rare cases where a parlay actually earns its k
READ MORE →
GUIDE
Jul 03, 2026
Closing line value is the strongest known predictor of long-term betting profit. I walk through what CLV means, a worked example where -2.5 closes at -4, and how to track it honestly.
READ MORE →
GUIDE
Jul 03, 2026
Every betting line hides a fee. I convert American odds to implied probability, calculate the 4.76% overround baked into a standard -110 spread, and build a no-vig fair line with real numbers.
READ MORE →
GUIDE
Jul 03, 2026
ROI is net profit divided by total amount risked, and it beats win percentage as a measure every time. Worked examples in units, what realistic long-run ROI looks like, and why sample size decides how
READ MORE →
GUIDE
Jul 03, 2026
Expected value is the one number that tells you whether a bet was smart before the result comes in. I work through the exact arithmetic on -110 and +200 bets, including a dog that loses 60% of the tim
READ MORE →
ANALYSIS
Jul 03, 2026
A coin flipper goes 7-3 or better over ten picks about 17% of the time, which should change how you read hot streaks. I walk through what 50-pick and 500-pick samples can and can't prove about a handi
READ MORE →
GUIDE
Jul 03, 2026
A beginner's guide that skips the fluff. It starts with what a -110 price actually means and ends with how to verify anyone you tail, with worked numbers at each step.
READ MORE →
ANALYSIS
Jun 28, 2026
CAPTRACKER is the only platform that auto-verifies handicapper records using live ESPN settlement data. Here is exactly how the capper leaderboard rankings work, from verified win rates and sample-siz
READ MORE →
ANALYSIS
Jun 28, 2026
Most handicapper records are self-reported and easy to manipulate. CAPTRACKER uses ESPN settlement data to auto-verify every pick, giving bettors a leaderboard where win rates are proven, not self-pro
READ MORE →
ANALYSIS
May 30, 2026
Handicapper convergence is when multiple professional cappers independently align on the same pick. Discover how CAPTRACKER tracks convergence signals using verified ESPN data to help you identify hig
READ MORE →
ANALYSIS
May 30, 2026
Not all handicapper records are created equal. Learn the critical metrics and verification methods that separate legitimate professionals from inflated claims, and how CAPTRACKER's auto-settlement tec
READ MORE →