Yates didn't make the Opening Day roster and will be designated for assignment, Pedro Moura of the Los Angeles Times reports.
The spring season wasn't kind to Yates, who allowed 12 runs over 12 innings on 15 hits, three of which were home runs. Yates entered camp with a career ERA and WHIP of 5.25 and 1.41, respectively, and doesn't carry much fantasy value apart from a K-rate of 26.2 percent.