The Colorado Rockies announced Tuesday that they have selected the contract of infielder Daniel Castro from Triple-A Albuquerque and have optioned infielder Ryan McMahon to Triple-A. Additionally, left-handed pitcher Zac Rosscup has been transferred to the 60-day disabled list with a left middle finger blister.
 
• Castro, 25, has hit in 22 consecutive games for Albuquerque, the third-longest hitting streak in Isotopes history … has a hit in all but one of his games for the Isotopes, and overall has batted .407 (37-for-91) with 17 runs scored, eight doubles, one triple, 11 RBI, five walks and six strikeouts … in parts of nine Minor League seasons, the Guyamas, Mexico, native has batted .286 (648-for-2263) with 298 runs, 110 doubles, 14 triples, 22 home runs, 258 RBI, 36 stolen bases, 131 walks and 243 strikeouts … originally signed by Colorado as a Minor League free agent on Nov. 21, 2016, he last appeared in the Major Leagues in 2016 with Atlanta, where he played 47 games and batted .200 (26-for-130) with eight runs scored, one double, seven RBI, one stolen base, seven walks and 24 strikeouts … across two seasons (2015-16) with the Braves, batted .217 (49-for-226) with 22 runs, three doubles, one triple, two home runs, 12 RBI, one stolen base, 10 walks and 39 strikeouts … he appeared in his second Major League Spring Training with the Rockies this year and batted .267 (12-for-46) with six runs, one double, six RBI, one stolen base, two walks and seven strikeouts in 26 Spring games. Castro Stats
 
• McMahon, 23, made his first career Opening Day roster and has batted .180 (9-for-50) with three runs, one double, three RBI, 10 walks and 22 strikeouts across 28 games with 11 starts (seven at first base, four at third) … the Yorba Linda, Calif., native made his Major League debut Aug. 12, 2017 vs. Miami and has batted .174 (12-for-69) with five runs, two doubles, four RBI, 15 walks and 27 strikeouts across parts of two seasons with the Rockies. McMahon Stats
 
• Rosscup, 29, began the season on the 10-day disabled list with a blister on his left middle finger after going 0-1 with a 7.94 ERA (5.2 IP, 5 ER), two walks and six strikeouts across five Spring Training games … appeared in nine games for the Rockies in 2017, and posted a 5.14 ERA (7.0 IP, 4 ER) with no walks and 10 strikeouts … over parts of four seasons with Chicago-NL (2013-15, 2017) and Colorado (2017), is 3-1 with a 5.30 ERA (54.1 IP, 32 ER), 32 walks and 67 strikeouts. Rosscup Stats
 
The Rockies currently have a full 40-man roster.