After a solid stint with Chicago last year, Effross was enjoying a breakout rookie year out of the Cubs’ bullpen this season, posting a 2.66 ERA with 50 strikeouts over 44 innings. His 47 appearances are tied for the second-most in the Majors, and he’s held opponents to a .220/.267/.299 (36-for-164) slash line this season, including a .132/.220/.245 (7-for-53) mark vs. left-handers. He has stranded 24 of his 28 inherited runners this year (85.7%), the third-best mark in the NL. He has five more years of club control after 2022 as well.
Wesneski, 24, went 6-7 with a 3.51 ERA in 19 starts with Triple-A Scranton/Wilkes-Barre this season. Over three Minors seasons in the Yankees organization, the right-handed pitcher has gone 18-14 with a 3.52 ERA. He was selected in the sixth round (No. 195 overall) of the 2019 MLB Draft out of Sam Houston State University.