"Basketball history" joke

Hanging in the hallway at the High School are the basketball team pictures from the past 40 years. A player in the center of the front row in each picture holds a basketball identifying the year - "62-63," "63-64," "64-65," etc.
One day I spotted a freshman looking curiously at the photos. Turning to me, he said, "Isn't it strange how the teams always lost by one point?"