Re: NCAA Singles
Seeding thoughts, Friend at Court explains it this way.
Placing is prohibited. Placing occurs, for example, when the Com-
mittee in a 16-draw tournament seeds four and “places” four. The
practice of placing is an attempt to hide the fact that in reality eight
players have been seeded instead of the permissible maximum of
four. The rule of “one in three” was established to provide some
matches between strong players in the first round, to increase the
variety of a player’s opponents, and to get away from the “strong-
weak-strong-weak” pattern in the draw, thereby giving players who
are usually first-round losers an occasional opportunity to meet each
other and advance to the second or third round.