Rex Brothers will serve as the Rockies' fill-in closer while Rafael Betancourt (appendicitis) is sidelined. Betancourt will be on the disabled list for at least the next 10 days. Brothers, 25, has an outstanding 1.11 ERA and 42 strikeouts in 40 2/3 innings this season with Colorado and needs to be owned in all standard leagues.

Rex Brothers converted his fifth save of the season Friday against the Giants. Rafael Betancourt was activated from the disabled list Friday, but apparently Rockies manager Walt Weiss wants to ease him back into the ninth inning. While Brothers notched the save, his 32-outing scoreless streak came to an end on a solo homer by Buster Posey. Still, he has a ridiculous 0.52 ERA and 37/17 K/BB ratio in 34 1/3 innings this season.

Rex Brothers worked a perfect ninth inning against the Reds to earn his second save of the season on Tuesday. With Rafael Betancourt on the shelf, Brothers will get the save opportunities in his stead. Through 25 2/3 innings, the left-hander has allowed just one run while striking out 25. He should be owned in all leagues while he continues to get save chances.

With Rafael Betancourt sidelined, Rex Brothers earned his first save of the year by pitching a scoreless ninth inning Wednesday against the Diamondbacks. Brothers has allowed just one run in 21 1/3 innings this season, so he was an obvious choice to close in Betancourt's place. Since it currently appears that Betancourt will avoid the DL, Brothers isn't guaranteed additional saves.

Rex Brothers hasn't allowed a run since April 6. And that run, surrendered to the Padres, is the only blemish on his campaign to this point. Brothers has six holds, a 0.47 ERA, 1.14 WHIP and 20/7 K/BB ratio over 21 appearances. He's been Colorado's best reliever, but closer Rafael Betancourt is also pitching well for the 24-21 Rockies. Brothers could be Colorado's full-time closer next season, but he likely won't earn saves in 2013 barring injury.

Rockies recalled LHP Rex Brothers from Triple-A Colorado Springs. He'll provide some much needed left-handed pitching depth. Despite his strikeout potential, Brothers needs to show more consistency to be considered a mainstay in the Rockies' bullpen. He's posted a dominant 3.06 ERA and 1.265 WHIP in parts of four seasons in the minors.

Rockies optioned LHP Rex Brothers to Triple-A Colorado Springs. Brothers entered the season as a sleeper for saves, but he got off to a woeful start, posting a 5.87 ERA and 2.28 WHIP over 15 1/3 innings. His 21 strikeouts over 15 2/3 innings shows his upside, but he has to throw more strikes if he wants to cash in on his potential.

Rex Brothers gave up four runs in two-thirds of an inning out of the pen Thursday versus the Diamondbacks. Brothers didn't get a blown save or take the loss, but the Rockies probably would have won today had he done his job. His ERA jumped from 3.95 to 6.28 this one, and his WHIP is a hideous 2.23. Even though he's a strikeout matching, the Rockies might need to send him back to Triple-A for a few weeks to get him straightened out.

Rex Brothers has a 1.59 ERA through 5 2/3 innings. Brothers is also sporting a cool 5/2 K/BB ratio. The 24-year-old is probably second in line for save opportunities this year in Colorado behind closer Rafael Betancourt.

Rex Brothers locked down his first career save on Tuesday, tossing a scoreless ninth inning to preserve the Rockies' 8-6 win. Rafael Betancourt got the night off after pitching in three straight games. Brothers walked the first batter and served up a single with one out, but retired the last two hitters without incurring damage. The 23-year-old has been moderately reliable in his rookie season, owning a 3.72 ERA and 1.45 WHIP, and just as importantly has earned manager Jim Tracy's confidence.