McWilliams was added to the Rays' active roster Sunday, Marc Topkin of the Tampa Bay Times reports.

The hard-throwing right-hander had been at the team's alternate training site in Port Charlotte since the start of the regular season. McWilliams made it as far as Triple-A Durham last season, but he was lit up there to the tune of an 8.18 ERA and 2.02 WHIP across 44 innings, although his 4.78 FIP implies he pitched somewhat better than those numbers indicate.

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