The Texas Rangers fell 4-3 to the Tampa Bay Rays on Thursday, to suffer their third straight loss and a series sweep after optioning Kumar Rocker to Triple-A Round Rock. Rocker's last start was on Wednesday against the Rays,

TAMPA — A day after Kumar Rocker’s rough return to the active roster that included a pair of fundamental mistakes on a single decisive play, the Texas Rangers acknowledged that while the pitching prospect’s future remains bright, he needs more time in the minor leagues to polish off his game.

The Texas Rangers have optioned Kumar Rocker to Triple-A and activated Chris Martin from the 15-day IL in a significant roster shakeup.