The Chicago Cubs placed left-handed pitcher Brandon Hughes on the 15-day injured list, retroactive to Friday, with left knee inflammation.
In a corresponding move on Saturday, they recalled right-hander Caleb Kilian from Triple-A Iowa City.
Hughes, 27, is in his second season with the Cubs. He is 0-1 with a 3.18 ERA in five relief appearances with 5 2/3 innings pitched.
Kilian, 25, made his major league debut with Chicago last season. In three starts, he was 0-2 with a 10.32 ERA in 11 1/3 innings. He gave up 15 runs (13 earned).
At Iowa City, Kilian has started three games and stands 1-0 with an ERA of 7.15. In 11 1/3 innings, he's allowed 16 hits, including four home runs.
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