Amateurs and professionals in college sports

During this past week, The New York Times published two stories concerning the eligibility of tennis players to participate in NCAA competitions. The point of contention has arisen over a very high number of international players who have been dominating championship play over the last few years. Last year, in the NCAA national championships, 38 of the 64 male competitors and 33 of the 64 female competitors were international players, and one estimate is that half of these players were professionals under NCAA rules