INTRODUCTION
So you want to be a contender?  Each week you will have the chance to put your predicting prowess to the test at the Box Office Derby.

HOW TO PLAY
Each week you may submit your box office predictions for the upcoming weekend using our entry form. For ease of contest administration, Box Office Mojo will provide a list of movies for players to predict weekend grosses (and will generally be the expected top performers for the coming weekend). To qualify for a given week's contest, your entry must be received by the posted deadline. Most games are due on Thursdays at midnght. A grace period of up to four hours past the posted deadline may be in effect for any given game to accommodate our international players.

DETERMINING YOUR ACCURACY
Derby winners are determined by their overall prediction accuracy, expressed as a percentage. Prediction accuracy for a given movie is calculated as follows: 1 - (Difference between your Prediction and Actual Box Office Gross / Actual Box Office Gross).

Example:
You predict SOME MOVIE will gross 21.5 million for the weekend.  This movie actually grosses 20 million.  So, we take the difference between your prediction and the actual gross and divide it by the actual gross: 1.5 / 20.0.  The result, 0.075, represents the percentage your prediction was off from the actual (7.5% off).  Subtracting this number from 1 (one represents being wholly accurate) tells us how close or accurate your prediction is to the actual: 1 - 0.075 = 0.925 or 92.5% accurate. Note that if your prediction is off by more than the actual gross (i.e., off by more than 100%), your accuracy will be 0% representing the fact that you were simply not accurate in your prediction (e.g., you predict 10 million and the actual is 3 million).

DETERMINING THE CHAMPIONS
Box Office Mojo will announce the results of each week's contest, as well as keep a running total of contestants over a period of time. See the Derby Champions page.

Weekly Derby Champions will be determined by their average predicting accuracy for that week.

Overall Derby Champions will be determined on a points-based system. Each week you play the contest, your average predicting accuracy will translate into points and will accumulate from week-to-week. The more you play the more points you will accumulate, so be sure to play often!

Example:
Your average predicting accuracy last week was 75.22%; you are awarded 75.22 points.  This week your average is 92.50%, so you now have a total of 167.72 points.

Box Office Mojo will be the sole determinant of player accuracy and scores. We reserve the right to disqualify anyone from the contest for any reason. Questions about the game should be directed to derbygame@boxofficemojo.com.