Here is the details:
Double or Nothing  Its simple, you will have to cash in your own hard earned points against the outcome of the match and If you predict correct winner then I will double the amount you cashed in simple. If you got it wrong then double the amount of points you cashed in will be deducted from your TOTAL. So one user can cashin Maximum 0500 Points per game.
Triple or Nothing : Same as Above , you will have to cash in your own hard earned points against the highest scorer or highest wicket taker of the match and If you predict correct winner then I will triple the amount you cashed in simple. If you got it wrong then triple the amount of points you cashed in will be deducted from your TOTAL. So one usercan cashin Maximum 050 Points for Highest wicket taker and Highest Run Scorer.
Predictions Contest 4: Answer below!
Type 

Winner of the match 
CSK or SRH 
Cash in and get double the points. 
HIghest Run Scorer 
Cash in and get triple the points 
Highest Wicket Taker 
Cash in and get triple the points

PS.Its not necessary to predict all 3 , you can also choose any one if you want to.
How to answer:
Answer: Team you think gonna win the match & (Amount you gonna cash in, which will get doubled if your prediction is right)
So for eg: I think MI will win and I would like to cash in 50 pts so my prediction will look like this : MI will win (50)
Highest Run Scorer (Amount you gonna cash in, which will get tripled if your prediction is right) : For Example Gambhir (50 Points)
Highest Wicket Taker (Amount you gonna cash in, which will get tripled if your prediction is right) : for Example Malinga (50 Points)
TIME LIMIT : Till the first bowl is bowled
Thank you & best of luck !