SAN ANTONIO — Warriors guard Stephen Curry has officially been ruled out another week, the team announced Friday afternoon. Curry, who had his Grade 2 left MCL sprain re-evaluated Friday, is set to be re-evaluated again on April 27. That would conceivably put his earliest possible return at a potential Game 7 of the first round. Such an extended series appears unlikely, given that Golden State enters Game 4 against the Spurs on Sunday with a 3-0 lead. But Curry, who will begin to participate in modified team practices Saturday, remains on track to return for the Western Conference semifinals, which could begin as early as April 28.