Wrestling Heads To Big Ten Championships    Spartans look to improve on last year's fourth-place finish.     UP NEXT FOR THE SPARTANS: The 13th-ranked Spartans head to the Big Ten Championships, held March 3-4 on the campus of Northwestern University.      Seeding The Tournament: Here are the seeds for MSU wrestlers for the 2001 Big Ten Championships.   Wgt.    Seed  125 lbs - Chris Williams   6th  133 lbs - Pat McNamara  2nd  141 lbs - Mike Castillo 5th  149 lbs - Karl Nadolsky 6th  157 lbs - Gray Maynard  3rd  165 lbs - Cory Posey    --  174 lbs - Nate Mesyn    --  184 lbs - John Wechter  --  197 lbs - Nik Fekete    3rd  Hwt. - Mike Keenan      --    Last Year At Big Ten's: The Spartans finished fourth with 87.5 points at the 2000 Big Ten Championships. Seven Spartans placed in the top seven, including Gray Maynard (3rd at 157), Karl Nadolsky (4th at 149) and Mike Castillo (7th at 141). Former  Spartan Nick Muzashvili won the Big Ten title at 197 pounds.     McNamara - CVII: Senior Pat McNamara (133) recorded his 107th career victory against 12th-ranked Witt Durden on Oklahoma on Feb. 23, moving him into a tie for eighth place on the MSU all-time career wins list. McNamara has 26 wins so far on the season. He rattled off seven straight victories until his loss to No. 1 Eric Juergens of Iowa on Feb. 11. He is currently ranked eighth in the country and has won his last four matches.     MOST WINS-CAREER AT MSU  1.   Erich Harvey    1992-97 147  2.   David Morgan    1995-98 129  3.    Dan Wirnsberger 1990-95 120  Mike Potts      1981-84 120  5.  Don Whipp       1990-93 119  6.   Emilio Collins  1990-95 115  7.  Nick Muzashvili 1996-99 110  8.   Pat McNamara    1997-2001       107  Jim Mason       1981-84 107    Injury Report: Sophomore Gray Maynard (157) began practicing again on Feb. 16. His target return date is the Big Ten Championships on March 3-4, where he is seeded No. 3.     Sageman Scores Three: Sophomore Charlie Sageman counted one of two wins against Oklahoma on Feb. 23. Sageman, listed at 149 pounds, upped his season record to 16-12 overall, 5-6 in duals, with a 2-0 decision over the Sooners' Tony Moore. MSU All-American Pat McNamara scored the other decision for MSU.