SAN FRANCISCO — The Washington Nationals are the highest-scoring team in baseball. The Giants have that honor over the past month, and they just came off a trip in which they averaged nearly seven runs per game. Naturally, the first game of their series at Oracle Park was a pitcher’s duel most of the night, but things got wild in the late innings. The Giants took the lead with two runs in the bottom of the eighth, but the Nationals countered with three in the top of the ninth. Jung Hoo Lee’s fourth hit of the night got the tying run to third in the bottom of the inning, but Bryce Eldridge struck out. The 4-3 loss was a gut punch, and came on a night when the Giants seemed poised to win for the fifth time in six games. The offenses combined for just two runs through the first seven innings, but the Giants broke through in the bottom of the eighth with a rally that started with Lee’s third hit of the night. After an error got him to second, Lee scored the go-ahead run on an opposite-field double from Eldridge. They tacked on an insurance run with a squeeze bunt from rookie Jonah Cox, but they needed more.  THE BRYCE IS RIGHT ...