BASEBALL

* Major League Baseball -- Reached a four-year agreement with

the Major League Baseball Umpires Association.

American League

* Detroit Tigers -- Optioned Mark Leiter (pitcher) to Toledo of the International League.

* Texas Rangers -- Signed Jose Guzman (pitcher) to minor league contract.

National League

* Atlanta Braves -- Signed Deion Sanders (outfielder).

BASKETBALL (NBA)

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* Golden State Warriors -- Signed Vincent Askew (guard).

FOOTBALL (NFL)

* League -- Named Harold Henderson executive vice president for labor relations and chairman of the NFL Management Council.