1.   Because of air travel restrictions instituted after the hijacking of four U.S. jetliners, getting the players to the courts on time loomed as a scheduling nightmare.

2.   It was a scheduling nightmare for a year.

3.   Principals resist, because trying to accomodate parents can produce a scheduling nightmare.

4.   United, whose ongoing dispute with its pilots has created scheduling nightmares for weeks.

5.   Call-ups for international matches are creating a scheduling nightmare for British soccer.

6.   The flurry of races ended a scheduling nightmare caused by snow, rain, wind and fog.