The gold-medal finals pairings have been determined at the 2001 FILA Cadet Freestyle National Championships, held at Northwestern Univ. in Evanston, Ill., March 31. This event features the best 15-17 year old wrestlers in the nation.    Three 2000 FILA Cadet Nationals champions have a chance to repeat as champions: Mack Reiter of Iowa at 110 pounds, Alex Tsirtsis of Indiana at 127.75 pounds and Aaron Keough of Ohio at 220 pounds.    Reiter will face Brandon Hardy of Virginia in the championships on Sunday. Reiter was the 92.5-pound champion last year.    Tsirtsis will battle Mike Martin of Virginia in the gold-medal finals. Tsirtsis was the 110-pound champion a year ago.    Keough will draw a fellow Ohio competitor, Pat Barrentine, in the gold-medal finals. Keough was the 187.25-pound champion a year ago.    On Sunday morning, the consolation finals round will be held first, to determine which wrestlers will compete in the third-place match, and which will compete in the fifth-place match. At the conclusion of this round, the medal matches will be held.    FILA CADET FREESTYLE NATIONALS  at Evanston, Ill., March 31  92.5 pounds  1st - Franklin Gomez (Puerto Rico) vs. Paul Donahoe (MI)  Consolation semifinals  Josh Fuller (NY) vs. Sean Conner (ID)  Kyle Shackle (OH) vs. Nick Gallick (AZ)  Semifinals - Gomez dec. Fuller, 9-8; Donahoe tech. fall Gallick, 10-0    101.5 pounds  1st - Dustin Schlatter (OH) vs. Christian Smith (VA)  Consolation semifinals  Kyler Sanderson (UT) vs. Cesar Grajales (FL)  Brandon Haman (MT) vs. Gabriel Mooney (MN)  Semifinals - Schlatter tech. fall Sanderson, 10-0; Smith pin Haman, 1:13    110 pounds  1st - Mack Reiter (IA) vs. Brandon Hardy (VA)  Consolation semifinals  Willy Holst (WI) vs. Zack Berman (IL)  Cody Garcia (KS) vs. Brock Zollinger (ID)  Semifinals - Reiter dec. Zollinger, 5-1; Hardy dec. Berman, 7-2    119 pounds  1st - Mike Poeta (IL) vs. Eric Sanders (MN)  Consolation semifinals  Christian Staylor (VA) vs. Angel Cejudo (AZ)  Michael Arias (OK) vs. Justin Swafford (IA)  Semifinals - Poeta dec. Cejudo, 11-8; Sanders dec. Arias, 5-1    127.75 pounds  1st - Alex Tsirtsis (IN) vs. Mike Martin (VA)  Consolation semifinals  A.J. Lavender (IL) vs. Dan Frishkorn (VA)  Eric Tannenbaum (IL) vs. Jaime Espinal (Puerto Rico)  Semifinals - Tsirtsis dec. Frishkorn, 7-3; Martin dec. Espinal, 4-2    138.75 pounds  1st - C.P. Schlatter (OH) vs. Brian Stith (VA)  Consolation semifinals  Nick Baima (IL) vs. Brad Stockton (IA)  Zack Lamano (UT) vs. Esteban Vera (Puerto Rico)  Semifinals - Schlatter dec. Baima, 6-3; Stith dec. Lamano, 5-3, ot    152 pounds  1st - Nate Galloway (PA) vs. Jacob Schlottke (MN)  Consolation semifinals  Curtis Scott (ID) vs. Matt Klimek (IL)  Seth Garvin (AL) vs. Clayton Chambers (OK)  Semifinals - Galloway tech. fall Scott, 11-1; Schlottke dec. Garvin, score unavailable    167.5 pounds  1st - Roger Kish (MI) vs. Gabe Conaghan (KS)  Consolation semifinals  Ben Askren (WI) vs. Chris Weidman (NY)  John Giuliano (IL) vs. Joey Gorczynski (OK)  Semifinals - Kish dec. Weidman, 4-0; Conaghan dec. Giuliano, 5-0    187.25 pounds  1st - Patrick Brownson (IL) vs. Hetag Pliev (OH)  Consolation semifinals  Jeff Knoll (IL) vs. Nick Terbay (OH)  Sam Wendland (MT) vs. Kory Morrow (IA)  Semifinals - Brownson pin Morrow, 2:52; Pliev tech. fall Terbay, 10-0    220.25 pounds  1st - Aaron Keough (OH) vs. Pat Barrentine (OH)  Consolation semifinals  Gerard Habibian (UT) vs. Joshua Sears (OH)  Grant Miller (IL) vs. Zach Pierson (IN)  Semifinals - Keough dec. Miller, 5-4; Barrentine dec. Sears, 8-3