GUIDONIA MONTECELIO, Italy — Rory McIlroy lost his match at the Ryder Cup. In scenes sure to stoke tensions ahead of Sunday’s singles, McIlroy accused Patrick Cantlay ’s caddie, Joe LaCava, of waving his hat in his line of vision ahead of the European star’s crucial putt on the 18th green in the final fourballs match Saturday. It wasn’t immediately …