Cedeno, 31, appeared only briefly in the majors last year with the Rays. He has thrown 142 1/3 innings over parts of seven campaigns in the big leagues. He carries a lifetime 3.98 ERA with 8.9 K/9 and 3.4 BB/9 at the game’s highest level, where he has held opposing lefties to a .226/.286/.299 cumulative slash but been battered by right-handed hitters (.844 OPS).
Since joining the Chicago organization on a minors deal, Cedeno has turned in impressive numbers at Triple-A. Through 21 2/3 innings, he has allowed just three earned runs on a dozen hits while recording 25 strikeouts against only four walks.
Bummer’s performance to date has been rather uplifting, making his demotion a bit of a surprise, though perhaps an opt-out clause in Cedeno’s contract forced the team’s hand. Over 19 1/3 frames on the year, Bummer owns a 3.26 ERA with 9.8 K/9 and 2.8 BB/9 as well as a sturdy 60.3% groundball rate. That’s a vast improvement on his walk-marred debut effort last year and is all the more impressive given that opposing hitters have benefited from a lofty .429 BABIP.
The South Siders had an open 40-man roster spot available, though it seemed that had been cleared to make way for Carlos Rodon. When the team activates Rodon from the 60-day DL this weekend, then, it’ll need to create another opening.