Giants score four runs in 10th, top Nationals
Mark Canha finished 4-for-6 with a pair of RBIs and Michael Conforto went 2-for-4 with two runs driven in, helping lead the visiting San Francisco GiaMark Canha finished 4-for-6 with a pair of RBIs and Michael Conforto went 2-for-4 with two runs driven in, helping lead the visiting San Francisco Gia