Holland days.

How big has Greg Holland been to the Rockies’ impressive start? Consider this: After Friday night’s 6-5 win over San Francisco, the Rockies are 7-0 in one-run games this season after finishing 12-20 in one-run games in 2016.

Holland, sporting a 2.00 ERA, recorded his major league-leading ninth save of the season Friday. Moreover, he has notched nine consecutive saves, tying Darren Holmes (Aug. 8-28, 1993) for the franchise record for saves in consecutive appearances. Holmes, of course, is now the Rockies’ bullpen coach.

The major reason I picked the Rockies to win only 84 games this season is because of their questionable starting rotation.

The loss of Chad Bettis to cancer treatment, and now Jon Gray to a stress fracture in his foot, means the young guns have to deliver.

They have the talent to pitch above their experience level, but I’ve been disappointed with Anderson’s performance this season. I predicted he would post the lowest ERA among Colorado’s starters, but after four starts his ERA is 7.32 and he has a 1.58 WHIP. Both marks are the highest among all of the Rockies’ pitchers.

Anderson has earned a reputation as a

During spring training and on road trips through Milwaukee and Los Angeles, I made it a point to ask other writers and various broadcasters for their thoughts about Rockies third baseman Nolan Arenado. The consensus: He is one of the top-five players in baseball.

Charlie Steiner, the former ESPN anchor who is now the primary play-by-play voice for the Dodgers’ radio network, told me: “Arenado’s tremendous. I’ve been saying for a few years now that he might be the best player in the National League.”

Still, Arenado remains undervalued by many baseball writers across the country. The four-time Gold Glove winner finished eighth in National League MVP voting in 2015 and fifth in 2016.

Two former Rockies relievers, right-hander Jason Motte and lefty Rex Brothers, are on the roster of the Gwinnett (Ga.) Braves, the Atlanta Braves’ Triple-A team.

Motte, who was released by the Rockies this spring, has appeared in four games for Gwinnett, giving up no runs and only two hits over 4L innings.

Brothers, who saved 19 games for the Rockies in 2015, is on the disabled list and hasn’t pitched this season.

Left-hander Tyler Matzek, whose struggles with performance anxiety have derailed his promising career, is not pitching right now. He was released by the Chicago White Sox organization two days before spring training ended.

Matzek told me he is hoping to field calls from other teams. Patrick Saunders is the president of the Baseball Writers’ Association of America: psaunders@denverpost.com or @psaundersdp