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Betting 101

Your complete guide to sports betting. Learn the lingo, master bankroll management, and understand how to find value in the betting markets.

Sports Betting Terminology

Learn the language of sports betting

Moneyline (ML)

A bet on which team will win the game outright, regardless of the point spread.

Lakers -150 means bet $150 to win $100

Spread (Point Spread)

The predicted margin of victory. The favorite "gives" points, the underdog "gets" points.

Chiefs -7.5 means they must win by 8+ points

Over/Under (Total)

A bet on whether the combined score of both teams will be over or under a set number.

O/U 220.5 - bet Over if you think 221+ total points

Juice / Vig (Vigorish)

The commission the sportsbook takes on bets. Standard is -110, meaning bet $110 to win $100.

The -110 on both sides is the "juice"

Parlay

A single bet that links multiple wagers. All selections must win for the parlay to pay out. Higher risk, higher reward.

3-leg parlay at +600 = bet $100 to win $600

Same Game Parlay (SGP)

A parlay where all legs come from the same game. Popular for combining player props with game outcomes.

LeBron 25+ pts + Lakers ML + Over 220.5

Player Props

Bets on individual player performances rather than game outcomes.

Curry Over 28.5 Points, Kelce Over 65.5 Rec Yds

Hedge

Placing a bet on the opposite side of an existing bet to guarantee profit or minimize loss.

Bet on underdog after your parlay needs one more leg

Push

When a bet lands exactly on the line, resulting in a tie. Your original stake is returned.

Team wins by exactly 7 when spread was -7

Chalk

The favorite in a matchup. "Eating chalk" means betting on heavy favorites.

"I'm taking the chalk" = betting on the favorite

Dog (Underdog)

The team or player expected to lose. Indicated by a + in front of the odds.

Pistons +350 to beat the Celtics

Lock

A bet someone believes is guaranteed to win. Spoiler: there are no true locks in betting.

"This is a lock!" - famous last words

Sharp

A professional bettor who uses sophisticated methods and data analysis. Books respect sharp action.

Sharp money moved the line from -3 to -4.5

Square

A recreational or casual bettor who bets based on emotions or popular opinion rather than analysis.

Square money is heavy on the Lakers tonight

Steam Move

Rapid line movement caused by heavy betting action, often from sharp bettors.

Line steamed from -3 to -5 in 10 minutes

Handle

The total amount of money wagered on a particular event or market.

Super Bowl handle was over $1 billion

Action

Having a bet in play. Also refers to the total amount wagered.

"I've got action on the night game"

Bad Beat

Losing a bet that appeared to be a sure winner until a late or unlikely event.

Team loses on a last-second garbage time TD

Backdoor Cover

When a team covers the spread late in the game through meaningless points.

Losing team scores TD in final minute to cover +14

Fade

To bet against something or someone. Often used when betting against public favorites.

"I'm fading the public on this one"

Hook

A half-point in a spread. Having the "hook" means your spread includes .5

Getting the hook at +3.5 instead of +3 is valuable

Middle

Winning both sides of a bet when the line moves. You bet both the original and new line.

Bet Chiefs -3, then bet opponents +7, Chiefs win by 5

Teaser

A parlay that allows you to adjust point spreads in your favor in exchange for lower payouts.

6-point teaser: Move -7 to -1 and +3 to +9

Anytime TD (ATTD)

A bet that a player will score a touchdown at any point during the game.

Derrick Henry ATTD +120

First Basket (FB)

A bet on which player will score the first points in a basketball game.

Giannis First Basket +550

Live Betting (In-Play)

Placing bets while a game is in progress. Odds change in real-time based on the action.

Bet on the team down 14 at halftime at +300

Closing Line Value (CLV)

The difference between the odds you got and the final odds before game start. Beating the close is key.

Got -3 early, line closed at -5 = good CLV

Understanding Odds

How to read and convert betting odds

Odds represent the probability of an outcome and determine your potential payout. There are three main formats:

Format Example Bet $100, Win... Implied Probability
American (Favorite) -150 $66.67 60%
American (Underdog) +200 $200 33.3%
Decimal 2.50 $150 (total return $250) 40%
Fractional 3/1 $300 25%

Converting American Odds to Probability

Favorite (-): Probability = |Odds| / (|Odds| + 100)
Underdog (+): Probability = 100 / (Odds + 100)

Example: -150 = 150/(150+100) = 60% | +200 = 100/(200+100) = 33.3%

Bankroll Management

The foundation of successful betting

Your bankroll is the total amount of money you've set aside specifically for betting. Proper management is what separates successful bettors from those who go broke.

Golden Rules of Bankroll Management

  • Only bet money you can afford to lose
  • Never chase losses with bigger bets
  • Keep your betting bankroll separate from living expenses
  • Track every single bet you make
  • Reassess your unit size monthly

Common Bankroll Mistakes

  • Betting too much of your bankroll on single bets (over 5%)
  • Increasing bet sizes after losses to "get even"
  • Not having a defined bankroll amount
  • Mixing betting money with everyday spending

Understanding Units

The standard way to measure bet sizes

A "unit" is a standardized measure of bet size based on your bankroll. Using units allows bettors to compare results regardless of bankroll size.

1 Unit = 1-2% of your total bankroll

Example Unit Sizes

$500 Bankroll 1 Unit = $5-10
$1,000 Bankroll 1 Unit = $10-20
$5,000 Bankroll 1 Unit = $50-100
$10,000 Bankroll 1 Unit = $100-200

Confidence-Based Unit Sizing

Adjust your bet size based on your confidence level:

HIGH
2-3 Units

Strong edge identified, multiple factors align

MEDIUM
1-2 Units

Good value, solid analysis supports the pick

LOW
0.5-1 Unit

Slight edge, worth a small play

Unit Calculator

Calculate your optimal bet sizes

1 Unit = $15.00
2 Units (High Confidence) = $30.00
3 Units (Max) = $45.00
0.5 Units (Low Confidence) = $7.50

Quick Bet Calculator

Potential Profit $13.64
Total Payout $28.64
Implied Probability 52.4%

Finding Edge (+EV)

The key to long-term profitability

"Edge" is the advantage you have over the sportsbook. A bet has positive expected value (+EV) when your estimated probability of winning is higher than the implied probability of the odds.

EV = (Win Probability × Potential Profit) - (Loss Probability × Bet Amount)

+EV Example

You believe a team has a 55% chance to win, but the odds are +110 (implied 47.6%)

Your estimated probability 55%
Implied probability of +110 47.6%
Edge (Your prob - Implied) +7.4%
$100 bet at +110: EV = +$12.50

Calculation: (0.55 × $110) - (0.45 × $100) = $60.50 - $45 = +$12.50 EV

-EV Example

Standard -110 odds with 50/50 coin flip probability

True probability (coin flip) 50%
Implied probability of -110 52.4%
Edge -2.4%
$110 bet at -110: EV = -$5.00

This is how sportsbooks make money - the juice creates negative EV on true 50/50 bets

How The Buddies Finds +EV

We use AI-powered analysis and Monte Carlo simulations to estimate true probabilities, then compare them to market odds to find +EV opportunities. Our models analyze historical data, matchups, and situational factors to identify where the books may have set incorrect lines.

Pro Tips for New Bettors

Advice from experienced handicappers

1. Start Small

Begin with small bets while you learn. The tuition you pay learning is worth more than any single bet.

2. Shop for Lines

Have accounts at multiple sportsbooks. Even a half-point difference can significantly impact your long-term results.

3. Track Everything

Keep detailed records of every bet. You can't improve what you don't measure. Track sport, bet type, odds, stake, and result.

4. Avoid Parlays (Mostly)

Parlays are fun but have high juice. The books love when you bet parlays. Stick to straight bets for better long-term results.

5. Bet With Your Head

Never bet on your favorite team just because you want them to win. Emotional betting is losing betting.

6. Respect the Closing Line

The closing line is the most accurate line. If you consistently beat the close, you're likely a winning bettor.

7. Understand Variance

Even +EV bettors have losing weeks and months. Trust the process and don't overreact to short-term results.

8. Take Breaks

If you're on a losing streak or feeling frustrated, step away. There will always be more games to bet tomorrow.

Responsible Gambling

Sports betting should be entertainment, not a source of income. Never bet more than you can afford to lose. If gambling stops being fun or starts causing problems, seek help. National Problem Gambling Helpline: 1-800-522-4700

Ready to Find Value?

Now that you know the basics, check out our AI-powered picks and analysis.

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