Detroit Lions -- Placed WR Mark Nichols on the physically unable to perform list (knee surgery), WR Pete Mandley on the non-football injury list (hernia surgery); signed WR Todd Brown of Nebraska and S Clarence Glenn of Southwest Louisiana; cut DE Scott Hillman of Virginia. New York Giants -- RB Joe Morris failed to report because of a contract dispute; signed S Greg Lasker; waived DE James Shutt. Denver Broncos -- Released WR John DeBoer, WR James Quaites, and C-G Mike Morris; placed S Van Pearcy on injured reserve.New England Patriots -- Waived RB Jon Williams, who failed his physical; placed DE Aaron Moog on the reserve-did not report list. Dallas Cowboys -- Signed RB Darryl Clack, their second-round draft pick. Cincinnati Bengals -- Signed LB Leon White, LB Tom Flaherty and QB Steve Bradley. Cleveland Browns -- Signed DB Paul Dombroski, TE Ron Wetzel and LB Doug West. St. Louis Cardinals -- Waived NT Steve Leshe, NT Michael Portis and WR Tim Green; signed DT Mark Duda.New York Jets -- Signed third-round draft pick LB Tim Crawford of Texas Tech. Indianapolis Colts -- Cut TE Russell Davis and WR Waddell Smith.San Francisco 49ers -- Waived G-C John Stevens and K Mark Harmon. Kansas City Chiefs -- Signed free-agent OT Bill Bain. New Orleans Saints -- Signed RB Dalton Hilliard of LSU. BASEBALL

Texas Rangers -- Placed Mike Mason (left elbow) on 15-day DL; called up P Mike Loynd from AAA Tulsa; moved P Ricky Wright from 15-day to 21-day DL. Los Angeles Dodgers -- Placed OF Mike Marshall (back problems) on 15-day DL; called up OF Jose Gonzalez from AAA Albuquerque. Montreal Expos -- SS Hubie Brooks (injury to left thumb) will be out at least five days. National League -- Named Dodgers OF Franklin Stubbs, who hit .375, player of the week. American League -- Named Tigers OF Kirk Gibson, who had the game-winning hit in four games, player of the week. Southern League (Class AA) -- Named Memphis Chicks OF Bo Jackson, who hit .423 with three HRs, player of the week. COLLEGES

George Mason -- Basketball F Kenny Sanders was selected to the East squad for the U.S. Olympic Festival July 25-Aug. 3. James Madison -- Named Lynn Davidson, University of Minnesota men's volleyball coach, to a similar position. Arizona -- Basketball G Steve Kerr had surgery to repair torn ligaments in right knee. HOCKEY

New York Rangers -- Signed LW Jan Erixon. HORSES

In Lexington, Ky., a Northern Dancer colt brought $3.6 million at the 44th annual Keeneland Selected Yearling Sale, but of the 154 horses sold on the first day of sales, only six brought more than $1 million in bidding. LOCALLY

Little League -- The Vienna American All-Stars -- by beating the McLean American All-Stars, 19-5, to win the Virginia District IV Little League tournament -- advanced to the Virginia state tournament in Leesburg July 29.