The Arizona Diamondbacks selected RHP Randall Delgado from Triple-A Reno and placed RHP Clay Buchholz (right elbow flexor strain) on the 60-day disabled list. The D-backs have 35 players on their active roster and the 40-man remains at 40.
 
Delgado, 28, has appeared in 6 games for the D-backs this season, going 2-0 with a 5.14 ERA (4 ER in 7.0 IP), .250 opponent average and 2 strikeouts. He was designated for assignment by Arizona on July 25, released on July 31, and re-signed with the club on a Minor League contract on August 18. He was 0-1 with a 2.00 ERA (4 ER in 18.0 IP), .169 opponent average and 14 strikeouts in 13 appearances (1 start) for Reno this season, including a 0.93 ERA (1 ER in 9.2 IP), .147 opponent average and 7 strikeouts in 5 games after returning to the organization.
 
Delgado has gone 30-29 with 2 saves, a 4.10 ERA (245 ER in 538.1 IP), a .251 opponent average and 462 strikeouts in 267 career games (53 starts) over parts of 8 Major League seasons with the Atlanta Braves (2011-12) and D-backs (2013-current). His 19 wins as a reliever since joining Arizona are the third most in franchise history behind Brad Ziegler (22) and Byung-Hyun Kim (20), while his 258 strikeouts in relief rank fourth behind Kim (345), Jose Valverde (331) and David Hernandez (289), and his 213 appearances rank eighth.
 
Buchholz, 34, was 7-2 with a 2.01 ERA (22 ER in 98.1 IP), .220 opponent average and 81 strikeouts in 16 starts for the D-backs this season. He was a late scratch from his scheduled start on September 13 at Colorado Rockies.