BaseballKansas City Royals -- Announced Mickey Cobb has...

Baseball

Kansas City Royals -- Announced Mickey Cobb has resigned as trainer.

Basketball

Dallas Mavericks -- Released C Jesse Spinner, C Jim Grandholm, Joel DeBortoli and F Richard Hollis.

Houston Rockets -- Waived G Willie Bland.

Golden State Warriors -- Released C Chuck Nevitt, F Kenny Green, G Mitchell Henry and G Stan Kimbrough.

Portland Trail Blazers -- Agreed to extend contract of F Buck Williams (Maryland) through 1993-94.

San Antonio Spurs -- Waived G David Rivers.

Washington Bullets -- Released C Michel Bonebo.

Colleges

Arkansas -- Signed basketball coach Nolan Richardson to seven-year contract.

Nebraska-Omaha -- Announced LB Larry Sibley no longer will play football due to neck injury.

Football

Atlanta Falcons -- Signed LB Robert Lyles on waivers from Oilers. Placed OG John Scully on injured reserve.

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Dallas Cowboys -- Agreed to terms with LB Jesse Solomon.

Hockey

Detroit Red Wings -- Signed D Bobby Dollas. Assigned F Dennis Holland to IHL San Diego.

New York Islanders -- Assigned F Mick Vukota to AHL Capital District.

New York Rangers -- Signed RW Brian Mullen and C Kelly Kisio to multiyear contracts.

Washington Capitals -- Returned LW Steve Maltais to AHL Baltimore.

Soccer

Baltimore Blast -- Announced MF Tim Wittman signed amendment to contract and will be placed on roster if MSL Players Association approves move.