The enigmatic Chris Stratton doesn't need to reverse his fortunes -- the Giants are 7-3 in his starts -- but he will strive to improve his performance, having recorded an 8.59 ERA in his last five outings. Opponents have hit six homers and batted .358 off Stratton in that span. Stratton, who has never faced the Cubs, will duel Chicago right-hander Jose Quintana in the 4:15 p.m. PT matchup Saturday at Wrigley Field.