Fractional Odds Indicate your Profit
Fractional odds originated with horse racing in the United Kingdom. These days, you will see fractional odds associated with other sports common in European as well. Some sportsbooks offer odds for tennis in a fraction format.
You multiply this fractional number with your wager to get your total potential return (not including your stake).
So, if the odds for a Rafael Nadal in an upcoming match are 3/2 then you calculate your return this way:
$100 (wager) x 3/2 (odds) = $150 (profit)
Your profit in this instance would be $150. You add back in your $100 wager and your total return would be $250.
Fractions that have a larger number on top indicate an underdog. Fractions where the denominator is larger indicate a favorite.
In the Dimitrov vs. Dzumhur match, Dimitrov’s odds are 5/27. If you wagered $100 on Dimitrov to win the match, your potential profit is $18.52.
$100 (wager) x 5/27 (odds) = $18.52 (profit)
If you wagered $100 on Dzumhur to win the match, your potential profit is $420.
That’s a huge difference! These odds tell us that Dimitrov is a heavy favorite. You are compensated very little for the risk of betting $100 on him.
Conversely, you have a riskier bet with Dzumhur, but your compensation for that risk if he wins is very large.
There’s a similar dynamic at play in the Raonic vs. Bhambri match-up.
Bet $100 on Raonic: $100 (wager) x 1/6 (odds) = $16.67 (profit)
Bet $100 on Bhambri: $100 (wager) x 4/1 (odds) = $400 (profit)
In the Anderson vs. Mayer match we can tell from the odds that Anderson is the favorite.
Bet $100 on Anderson: $100 (wager) x 1/4 (odds) = $25 (profit)
Bet $100 on Mayer: $100 (wager) x 13/4 (odds) = $325 (profit)