anderson silva -450
chael sonnen +275


what does this mean?

son... i am disappoint

i am guessing ur dissapointed because u dont know urself lol

-450 is like giving 4.5:1 odds.
+270 is like 2.7:1 in your favor.

this

-450 means you bet 450 to win 100
+270 means you bet 100 to win 270

the - is the favorite

you can figure out the fg ratio pretty easy...

add both numbers (275+450=725)

divide that number by 200 (725/200=3.6)

so he would you would have to bet 3.6fg on silva for every 1fg on chael.

3.6:1

450+275=725
725 divided by 200 = 3.6
Therefore odds are 3.6:1 in favor of silva since he has the "-".

^above info is good and if your wondering why its always like -475 +200 or -1000 +2000 its because these kinds of odds are based off of $100 or $1 just so its easier as a common denominator