USA Wrestling will host the men's FILA Junior National Championships / FILA World Team Trials April 29 - May 1 in Lincoln Neb. at The Devaney Sports Center on the Nebraska State Fairgrounds.     Talented wrestlers between the ages of 17-20 will be featured as they battle it out for National titles and spots on the Junior World Team. Competition will be in the Olympic styles of wrestling: freestyle and Greco-Roman.     Registration for both freestyle and Greco-Roman will begin on Thursday, April 29 with competition beginning Friday, April 30. Greco-Roman preliminaries will begin at 9:00 a.m. on Friday, April 30, with preliminaries through finals beginning at 2:00 p.m. Freestyle preliminaries will begin on Saturday, May 1 at 9:00 a.m. and finals will begin at 6:00 p.m.    Champions in each weight class will qualify for a partially subsidized international tour for both freestyle and Greco-Roman. The qualifier is determined by placement in each style and each weight class.    In years past, champions have qualified for the FILA Junior World Championships. However, this year there will be no FILA Junior World Championships.     Tickets will be available at the door. Prices are as follows:  Two-day pass: $10 for adults, $5 for kids  Single day pass: $5 for adults, $3 for kids    For more information including a complete registration flier please visit www.themat.com or contact the Event Director Charles Burton at the University of Nebraska at (402) 472-6471.    2003 Greco-Roman Champions  50 kg/110 lbs. - Paul Donahoe (Davison, Mich.)  55 kg/121 lbs. - Joe Betterman (Marquette, Mich./USOEC)  60 kg/132 lbs. - Casey Lawson (Marquette, Mich./USOEC)  66 kg/145.5 lbs. - Harry Lester (Cayahoga, Ohio/USOEC)  74 kg/163 lbs. - Bobby Fischer (Marquette, Mich./USOEC)  84 kg/185 lbs. - Ryan Halsey (Oceanside, Calif./Dave Schultz WC)  96 kg/211.5 lbs. - Adam Haake (Marquette, Mich./USOEC)  120 kg/264.5 lbs. - Cole Konrad (Freedom, WIs./MN Storm)    2003 freestyle Champions  50 kg/110 lbs. - Paul Donahoe (Davison, Mich.)  55 kg/121 lbs. - Mike Silengo (Colorado Springs, Colo./Dave Schultz WC)  60 kg/132 lbs. - Nate Gallick (Tuscon Ariz./Cyclone WC)  66 kg/145.5 lbs. - Andy Simmons (Williamston, Mich./Michigan WC)  74 kg/163 lbs. - Don Reynolds (New Lenox, Ill./Overtime)  84 kg/185 lbs. - Kurt Backes (Station N.J./Cyclone WC)  96 kg/211.5 lbs. - Joe Forsman (Sandpoint, Idaho/Army)  120 kg/264.5 lbs. - Cole Konrad (Freedom, Wis./MN Storm)