SAN DIEGO — The Colorado Rockies designated right-hander Jorge Rondon for assignment Saturday and called up left-hander Ken Roberts from Triple-A Albuquerque.
On Friday night in a loss to the San Diego Padres, Rondon didn't retire any of the eight batters he faced, allowing five hits, two walks and a run. He exited with a 90.00 ERA after two outings.
Roberts had a 3.27 ERA in six appearances for Albuquerque.
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