(Updated: CHANGE: NOTEBOOK - Werth's injury to groin)
Rockies 7, Nationals 6: Michael Cuddyer went 3-for-4 with a home run and four RBIs to extend a pair of impressive streaks as visiting Colorado held on to earn a split of the four-game series.
Cuddyer's solo homer leading off the second inning extended his career-long hitting streak to 21 games and marked the 40th straight game in which he has reached base. He added an RBI single in the third and a two-run single in the fourth to make it 7-0 as the Rockies jumped all over Washington starter Ross Detwiler.
Nolan Arenado also homered for Colorado and starter Jorge De La Rosa (8-4) gave up two runs in six innings to win for the sixth time in his last seven decisions. After the Nationals scored four times with two outs in the bottom of the eighth to get within 7-6, Rex Brothers got Ian Desmond swinging and then retired the side in the ninth for his fourth save.
Detwiler (2-6) continued to struggle, giving up seven runs and nine hits in 3 2/3 innings. The left-hander has a 6.29 ERA over his last seven starts while allowing 53 hits in 34 1/3 frames.
Chris Marrero scored Roger Bernadina on a groundout in the fourth to record his first RBI since 2011 for the Nationals. Jhonatan Solano had a pinch-hit two-run double to cap the eighth-inning rally.
GAME NOTEBOOK: The Nationals plan to place struggling right-hander Dan Haren on the 15-day disabled list with a tired arm/shoulder. ... Washington RF Jayson Werth left after singling in the fourth with a groin injury. Werth missed Saturday's game with the flu and was on the disabled list earlier in the year with a right hamstring injury. ... Cuddyer's hitting streak is tied with Larry Walker's in 1999 for the third-longest in franchise history. Dante Bichette owns the club record with a 23-game run in 1995.