To convert from a probability to odds, divide the probability by one minus that probability. So if the probability is 10% or 0.10 , then the odds are 0.1/0.9 or '1 to 9' or 0.111.

Calculating Winnings\n\n Odds of 7/5 mean you'll winR$7 for everyR$5 you wager on the A's. Conversely, the Rangers' odds of 5/8 mean you need to wagerR$8 to winR$5 on Texas. Another way to look at it: If the first number is larger than the second, you're betting on the underdog for a higher potential payout.

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A +1.5 spread is commonly seen in baseball betting, the standard runline  for MLB. This spread means the underdog must win outright or lose by exactly one run to cover the spread. Alternatively, a -1.5 spread means that the favorite must win by at least two runs. Many baseball games are decided by fewer than two runs.