Vijay Singh received a key ruling in his lawsuit against the PGA Tour when a judge allowed his complaint that he was treated differently from other players under the tour's anti-doping policy.

Judge Eileen Bransten ruled Monday in New York State Supreme Court on the tour's motion to dismiss.

She ruled in favour of the PGA Tour on five elements, most of those dealing with Singh having to abide by tour regulations because he signed up to be a member. Bransten sided with Singh on his allegations that some players received different treatment.

In the order, Singh claims the tour knew of players who used deer antler spray and did not attempt to punish them.

Singh admitted in a Sports Illustrated article last year that he used the spray.