Wrestling fans will have a great opportunity to enjoy the best wrestling in the United States on May 21.    This is the first day of the Challenge Tournament of the U.S. Olympic Team Trials in Indianapolis, Ind.     Those who are in Indianapolis to enjoy the Olympic Trials, as well as those who are not able to attend, will also be able to see great American wrestling stars on a national television broadcast.    The 2004 U.S. National Wrestling Championships, which were held in  Las Vegas, Nev., will air on ESPN2 nationally on Friday, May 21, at 11:00 p.m. Eastern time.    The nation's best men and women wrestlers will be on display in this one-hour show. This was the most important qualifying event for the 2004 U.S. Olympic Team Trials. All of the athletes on the television broadcast qualified to compete in Indianapolis.    This broadcast is a great opportunity for every wrestling fan to show their support for the promotion of the sport, by tuning in and letting as many other people know about the broadcast as possible. Send this release to everyone in you personal address book.     Wrestling will be over in Indianapolis that evening, so all of the fans at the U.S. Olympic Team Trials will be asked to watch the show at their homes, in their hotels or in the local sports establishments.    Fans who are not in Indianapolis are asked to make sure they watch the show from their homes.    This ESPN2 broadcast in made possible by Body Bar Systems, the official sponsor of USA Wrestling's  Women's National Team and USA Wrestling, the national governing body for amateur wrestling in the United States.    Coming on Tuesday - The list of matches included in the ESPN2 show…