Relief pitching has buoyed the Giants all season. Since theAll-Star break, the bullpen has gone beyond whatever is better than"buoying." Five relievers - Santiago Casilla, Jeremy Affeldt, Sergio Romo,Javier Lopez and Brian Wilson - combined for four hitless inningsSaturday night as the Giants subdued Milwaukee 4-2 inChina Basin. In the nine games since the break, the relievers have thrown 302/3 innings and allowed all of one earned run.