The haves really rubbed it in on the have-nots this weekend.

Josh Beckett’s five scoreless innings Sunday set up the Dodgers for an 8-2 win over the pitching-starved Colorado Rockies.

The Dodgers took three out of four in the series with their starting pitchers in the three victories — Beckett and newly minted All-Stars Zack Greinke and Clayton Kershaw — allowing one earned run in 21 innings at notoriously hitter-friendly Coors Field.

Beckett’s effort was the fifth time in their past 11 games a Dodgers starter has turned in a scoreless performance and the seventh time in Beckett’s 17 starts. The Dodgers left the town where ERAs go to get high still sporting the lowest of any starting rotation in baseball (3.03).

At the other end of the spectrum — way, way at the other end — the Colorado Rockies have used 13 starting pitchers to produce the worst ERA in baseball (5.34). Over their past 20 games, their starters’ ERA is a miserable 7.58 and their only three wins came in games started by Jorge De La Rosa, who beat the Dodgers on Saturday.

“This game is about pitching,” Dodgers manager Don Mattingly said. “I don’t know exactly what they (the Rockies) are going through. I know they’ve had some injuries and this is always a tough place to pitch. But we’ve talked about it all along — pitching is our strength. It’s what is going to get us where we want to go.”

There is some vulnerability to the Dodgers’ rotation, however. Dan Haren was roughed up for eight runs in the only loss of the weekend Saturday and has a 5.74 ERA over his past 10 starts. Beckett, meanwhile, is dealing with the dreaded “general soreness” — a condition known to most as the effects of aging.

Mattingly said Saturday that the days between Beckett’s starts recently have been a voyage of discovery, filled with uncertainty over whether Beckett will actually be able to pitch.