New York ? The National Labor Relations Board decided not to file a complaint against baseball owners over their use of a computerized system that evaluates umpires.

The decision means the World Umpires Assn.’s fight against the Questec Umpire Information System now will shift to a grievance that is to be heard by arbitrator Jerome Ross starting in the first week of July.

Umpires filed an unfair labor practice charge Sept. 23, complaining the commissioner’s office had refused to provide information on Questec. The NLRB’s New York office told the WUA earlier this month that NLRB general counsel Arthur F. Rosenfeld would not issue a complaint, and umpires withdrew the charge Tuesday, union lawyer Joel Smith said Saturday.

“Their rationale was that although the commissioner was a party to providing information and had not given as much information as some might want, in the view of the general counsel it was timely enough and not so insufficient as to be a violation of the National Labor Relations Act,” Smith said.

The NLRB’s decision was first reported Saturday by The New York Times.

Umpires say the Quectec system is not accurate, and that strike zones change depending on the operator.