This article analyzes top-level basketball competitions and measures the effect of superstar presence on effort provision in rank-order tournaments. I extend the previous literature to team competitions for male and female teams, as well as different institutional settings over a long period of...

We show that team formation can serve as an implicit commitment device to overcome problems of self-control. If individuals have present-biased preferences, effort that is costly today but rewarded at some later point in time is too low from the perspective of an individual's long-run self. If...