Evan Gattis delivered a go-ahead RBI single in a 6-4 win over the Nationals in 13 innings on Friday night. Gattis extended his hitting streak to 19 games with a single in the fifth inning and he played hero in the 13th by knocking in B.J. Upton with the go-ahead run on a single off Jerry Blevins. The 27-year-old is now batting .298/.347/.576 with 16 home runs and 39 RBI over 57 games this season. Only Nolan Arenado (27 games) has had a longer hitting streak in MLB this year.