"Being in this chase right now, to be able to pitch my best, at this time, is big for me and for the team," Nolasco said.
The Dodgers lead 1-0 in the second, when Carl Crawford knocked out an RBI two run single to left that scored Mark Ellis and Skip Schumaker for the 3-0 lead.
Adrian Gonzalez connected on a sacrifice fly in the fifth that scored Crawford for the 4-0 lead.
But the Rockies began to crawl back in sixth inning when Troy Tulowitzki grounded out to shortstop, and D.J. LeMahieu scored and trailed 4-2.
Josh Rutledge connected on a solo home run in the eight that trimmed the Dodger lead 4-3.
The Dodgers would remained poised as Mark Ellis hit a fly ball off of the running Charlie Culberson that cleared the bases and left Ellis at second. Michael Young, Andre Ethier, and Nick Punto all scored for the 7-3 lead. Culberson was charged with the error.
"I was expecting to be closer to the ball. I got there quicker than expected and missed it," said Culberson.
Chris Withrow picked up his first save in the ninth inning.
Nolasco (12-9) allowed two runs, five strike outs and five hits in six innings of work to improve his ERA to 2.27.
"He's kind of solidified that fourth guy for us and that's where we had been searching. Ricky came in and basically gave us another guy," said manager Don Mattingly.
Jhoulys Chacin (13-8) gave up four run and nine hit s in seven innings for the loss.
"We have tons of talent in this room," Nolasco said. "Veterans, young guys, to be able to give a couple guys breathers and have other guys step up is huge. Everybody comes in ready to play and when you have depth like that, it's huge for the team."
The Dodgers go for their seventh win in a row on Wednesday as they face the Rockies in the last game of the series.