In their relentless search for relief help, the Chicago Cubs announced the signing of free agent left-hander Dario Alvarez to a one-year contract.

Alvarez, 28, posted a 2.76 ERA in 20 appearances with the Rangers in 2017. Alvarez struck out 17 but walked 14 in 16 1/3 innings due to the lack of consistency with his slider.

In 18 appearances (17 in relief) with Triple-A Round Rock last season, Alvarez was 2-0 with a 2.33 ERA while striking out 36 in 27 innings.