Answer:

tournament

AnswerCrossword Clue
TOURNAMENTCruciverbal activity featured in "Wordplay"
TOURNAMENTOpen, for one
TOURNAMENTThe Masters, e.g.
TOURNAMENTSports event.
TOURNAMENTMasters' contest.
TOURNAMENTSeries of contests.
TOURNAMENTN.Y. Regional, for instance.
TOURNAMENTKnightly sport
TOURNAMENTPasadena event
TOURNAMENTWhat to call us amid explosive series of contests (10)
TOURNAMENTThe NCAA's March Madness, e.g.
TOURNAMENT.... of Champions
TOURNAMENTIt may have a number of seeds