UFC 110 02/20/10 Lightweight Joe Stevenson -260 George Sotiropoulos +200 Welterweight Matchup Chris Lytle -160 Brian Foster +130 Light Heavyweight Matchup James Te Huna -160 Igor Pokrajac +130 Heavyweight Matchup Antonio Rodrigo Nogueira even Cain Velasquez -130 Middleweight Matchup Wanderlei Silva -150 Michael Bisping +120 Light Heavyweight Matchup Ryan Bader -155 Keith Jardine +125 Heavyweight Matchup Mirko Cro Cop -180 Ben Rothwell +150 Light Heavyweight Matchup Elvis Sinosic -150 Chris Haseman +120 Light Heavyweight Matchup Krzysztof Soszynski -200 Stephan Bonnar +160 Middleweight Matchup Goran Reljic -210 CB Dollaway +170 from sportsbook.

explain these to me. what do the numbers beside + and - mean. you have to bet that much to win that much?

so -130 means you have to bet $130 to win additional $100. +130 means a bet of a $100 will result in an additional $130.