It goes by the last numbers in each team's score at the end of each quarter, BigFrank.
Matt's square is at the intersection of Giants - 4/Pats - 0 at the end of the first and third quarter. So at the end of the third quarter, if the Giants have two converted touchdowns (14) and the Patriots have one converted touchdown and a field goal (10), then Matt wins $6000.
Usually what happens is people buy a square until the grid is filled up, and then the side numbers are generated at random.
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You can take the heart out of the hooker but you can't take the hooker out of the heart. -- Frankenhooker