On Sunday night, the Indiana Pacers played the Oklahoma City Thunder (in Oklahoma) for Game 2 of the NBA Finals. The Pacers lost by a score of 123-107. Tyrese H

Indiana is tied 1-1 but has led for less than two minutes in the series, and Oklahoma City handcuffed the Pacers in the first two games, daring Indiana to take 3-point shots and barely giving up

But if you were to point to a single number that most defined the Indiana Pacers' against-all-odds 111-110 Game 1 NBA Finals win, which required a 15-point fourth quarter rally, 18 would tell you a lot.