The Rockies are limping toward the finish line and it ain’t pretty. The rebuilding Washington Nationals (65-91) beat the Rockies 5-4 on Monday night at Coors Field, extending Colorado’s losing streak to five games as all-star pitcher German Marquez’s second-half slump continued. “I feel good, it was a great season and I stayed healthy all year and that’s the best thing to me,” said Marquez, who pitched five innings in his final start of the season to finish 12-11 with a 4.40 ERA. The right-hander admitted that a little bit of fatigue set in September.