Ralph Miller, on top of his game at 61 with an unbeaten Oregon State team, is college basketball's coach of the year in the estimation of the U.S. Basketball Writers Association, and elsewhere on the coach-go-round, we find:

Eddie Biedenbach out of work after guiding Davidson to a three-way tie (at 11-5) for the Southern Conference regular-season title. The former right-hand man to Norm Sloan in their N.C. State days was ditched after Davidson lost to Marshall in the first round of the SC tournament for a 13-14 season record, 29-51 for three years. . . Hobart alum Tom Oberdorfer, a veteran of the Washington and Baltimore club wars, promoted from assistant coach of men's lacrosse at Georgetown. . . Dale Strahm, after four years coaching great Navy linebackers, southbound to coach Georgia LBs. . .

Ex-Bullet Clem Haskins meriting fanfare, for already, coaching Western Kentucky to an Ohio Valley Conference regular-season hoop title; soph Percy White from De Matha helped with a 25-point game against archrival Eastern Kentucky. . . Eagle boss Dick Vermeil allowing on his recent visit here he was right proud of John Walton, who moved directly from relief-pitching for Ron Jaworski to 7-2-1 as football coach at Elizabeth City State. . .

And Frank Kush, Frank Kush. Fred Miller, athletic director at Arizona State when Kush was canned during 1979 football season, yesterday in the punter Kevin Rutledge lawsuit against Kush and ASU identified three players he said told him they saw the veteran coach punch Rutledge during the 1978 Washington game. One player was Bryan Caldwell, who preceded Miller to the stand and said; yes, he saw the incident but admitted signing a 1979 statement (solicited from the players by coaching staffers) denying he had. Miller related how he as a.d. supported Kush "aggressively" in light of the coach's denials of aggression, until after a press conference "some individuals came up to me . . . said they had witnessed some kind of altercation on the sidelines . . . that I shouldn't put myself so out front in his defense."