After a four-year hiatus, Zagurski resurfaced in the big leagues last season for the first time since 2013. He was lit up in two relief appearances for Milwaukee but fared better with the organization's Triple-A affiliate at Colorado Springs, logging a 3.20 ERA and 1.24 WHIP in 45 innings. Zagurski will likely open 2019 with the Cubs' Triple-A affiliate in Iowa.

Zagurski only appeared in a pair of games for Milwaukee last year before getting designated for assignment in July and sent back to the Triple-A level to spend the rest of the 2018 season. He logged a 3.20 ERA and 1.24 WHIP with a 66:17 K:BB across 45 innings of relief for Triple-A Colorado Springs, and will provide more depth to the Cubs' bullpen.

Zagurski struggled in two appearances since having his contract purchased June 28 and allowed seven runs on five hits and two walks for an unsightly 63.00 ERA. The 35-year-old left-hander could return to Triple-A Colorado Springs if he clears waivers, but he seems unlikely to garner another look from the Brewers given his performance this season and sub-par major-league track record.

Zagurski signed a minor-league contract with the Brewers in December and posted a 3.90 ERA and 1.33 WHIP with a 48:12 K:BB over 30 innings with the Sky Sox. The 35-year-old hasn't pitched in the majors since 2013, and has a career 7.05 ERA and 1.74 WHIP across 75.1 innings, covering parts of five major-league seasons. The veteran left-hander should serve a low-leverage role out of Milwaukee's bullpen, and seems likely to have a relatively short stay with the club.