Stephen Strasburg provided much of the salve Tuesday night, allowing one run and three hits over a season-high eight innings as the Nationals ran their winning streak to eight games with an 8-1 victory over the Arizona Diamondbacks. Success had come with suspense for the Nats: four consecutive one-run games, including the last three decided by the final at-bat, and the last two in the 11th inning. Rookie Chase Anderson (7-5) faced six of them, allowing five singles and a walk before he was pulled in the shortest outing of his young career. Nationals manager Matt Williams praised Desmond's ability to "shorten down" on a swing that produced a pair of runs: "He's going to get a bunch of homers, we know that, but when he can take a two-run single, he's feeling it and he's seeing the ball good." Diamondbacks CF Ender Inciarte grounded out in the ninth to finish an 0-for-4 night, ending his team rookie record hitting streak at 18 games. Nationals OF Nate McLouth will have surgery Thursday for a torn labrum in his right shoulder and is done for the year.