Rays send seven down to minors

The Rays announced several roster moves on Thursday.

The team optioned pitchers Nathan Karns, Kirby Yates, C.J. Riefenhauser and Jeff Beliveau, infielders Vince Belnome and Hak-Ju Lee, and outfielder Kevin Kiermaier to minor-league camp. The team also re-assigned outfielder Mikie Mahtook to minor-league camp.