The term 'Reason for Overtime' can be broken down into three crossword solutions: TIE (3 letters), TIEGAME (7 letters), and TIESCORE (8 letters). A TIE is a situation in which two teams or players have the same score, and a tiegame is a game that ends in a TIE. Tiescore is the score of a game that ends in a TIE. Therefore, the term 'Reason for Overtime' refers to the fact that when two teams or players have the same score, they must play an extra period of time in order to determine a winner.