Rondon was recalled from Triple-A Albuquerque on Sunday, Patrick Saunders of the Denver Post reports.

Rondon will provide the Rockies with bullpen help in the short term, but they won't need it Sunday, as the game has been postponed due to weather. A corresponding roster move has yet to be announced.

Rondon was optioned to the minors over the weekend, MLB.com's Thomas Harding reports.

A dark horse to claim an Opening Day bullpen gig with the Rockies after he was claimed off waivers from the Cardinals in November, Rondon failed to impress in his limited spring opportunities, yielding four hits and a walk over 2.1 innings. He was able to use his biting fastball to pick up four strikeouts, which does give him a dose of upside should be able to harness his control with more regularity. Expect him to open the year at Triple-A Albuquerque.

Rondon was claimed off waivers by the Rockies on Monday.

The 26-year-old right-handed reliever has only pitched one inning in the big leagues, but he posted a 3.03 ERA and a 1.27 WHIP in 62.1 innings at the Cardinals' Triple-A affiliate last season, and could fit in as a middle reliever in Colorado.

Cardinals recalled RHP Jorge Rondon from Triple-A Memphis.

Maybe he'll actually get into a game this time, as Rondon has been up twice before but is still waiting to make his major league debut. The hard-thrower has put up a 3.41 ERA with 23 strikeouts over 34 1/3 frames at Memphis this season.

Cardinals optioned RHP Jorge Rondon to Triple-A Memphis.

Rondon has been up with the big club twice this season but still hasn't made an appearance. He'll return to a 2.51 ERA and 8/1 K/BB ratio in 14 1/3 innings at Memphis.

Cardinals recalled RHP Jorge Rondon from Triple-A Memphis.

Rondon had a brief stint with the Cardinals last month, but didn't appear in a game. The 26-year-old has posted a 2.51 ERA and 8/1 K/BB ratio in 14 1/3 innings this season in Triple-A. He'll serve as a middle relief with the big club.

Cardinals optioned RHP Jorge Rondon to Triple-A Memphis.

Rondon's stay with the Cardinals lasted just three days, and he didn't appear in a game. He'll continue to serve as additional bullpen depth at the Triple-A level.

Cardinals recalled RHP Jorge Rondon from Triple-A Memphis.

Rondon will pitch in mid-relief for the Cardinals. He had a 5.40 ERA in five innings this year at Memphis.

Cardinals optioned RHP Jorge Rondon to Triple-A Memphis.

Rondon was in a battle for a bullpen job this spring, but he lost out to Keith Butler for the final spot. The 25-year-old will likely find himself in St. Louis at some point this summer.

Jorge Rondon pitched another scoreless frame Thursday and has yet to allow a run in 7 1/3 innings this spring.

He's given up eight hits, walked two and struck out six. The 25-year-old Rondon was added to the Cardinals' 40-man roster in Oct. 2012, but he's yet to appear in the majors. He's making a nice case for a spot in this year's pen, though. There should be room for two of he, Pat Neshek and Sam Freeman, at least until Jason Motte returns.

Cardinals optioned RHP Jorge Rondon to Triple-A Memphis.

An expected move. Rondon, a 24-year-old reliever, had a 3.49 ERA and 50 strikeouts over 49 innings last season between Double- and Triple-A.