The Cubs have designated righty Jake Buchanan, per a club announcement. His 40-man spot will go to lefty Zac Rosscup, whose contract was selected. In a corresponding move, right-hander Dylan Floro was optioned to Triple-A.
Buchanan, 27, has seen limited MLB action in each of the past three seasons. He landed in Chicago early last year after he was released by the Astros. Buchanan had been working at Triple-A to open the 2017 campaign, posting a 4.75 ERA with 6.3 K/9 against 4.1 BB/9 over 41 2/3 innings.
As for Rosscup, he’ll return to the majors for the first time since 2015. He spent all of 2016 rehabbing after shoulder surgery, but had shown well thus far at Triple-A. Through 15 2/3 innings over nine appearances, Rosscup owns a 3.45 ERA with an impressive combination of 25 strikeouts against just three walks.