Jeffress, 28, has a 2-2 record with 27 saves and a 2.22 ERA (11 ER/44.2 IP) over 47 relief appearances for Milwaukee this season. He ranks among National League leaders in saves (T5th) and games finished (4th, 40), and has the 10th-lowest ERA among N.L. relievers. He has converted 27 of 28 save chances this season, including 16 consecutive tries since May 24. Over his last 14 relief appearances since June 24, Jeffress has gone 1-0 with a 0.69 ERA (1 ER/13.0 IP) and 8 saves, while holding opponents to a .224/.283/.245 slash line.
Jeffress was originally selected by Milwaukee in first round (16th overall) of the 2006 June draft and has gone 11-4 with a 2.93 ERA (63 ER/193.2 IP) over 198 career games with Milwaukee (2010, 2014-16), Kansas City (2011-12), and Toronto (2013-14).
Alberto is batting .175 with 4 RBI in 25 games over 2 stints with the Rangers this season. He was 1-for-3 with an RBI in one start at 3B since his most recent recall on July 20.
The Rangers' major league roster remains at the 40-man limit.