Dodgers: Cuban P Yaisel Sierra's U.S. debut a mixed bag

Dodgers’ Cuban pitching prospect Yaisel Sierra pitches in the first inning during the Cal League game for the Rancho Cucamonga Quakes against the High Desert Mavericks in Rancho Cucamonga, Saturday, April, 30, 2016. (Eric Reed/For The Press Enterprise) Kids watch Dodgers’ Cuban pitching prospect Yaisel Sierra during his warm up before the Cal League game for the Rancho Cucamonga Quakes against the High Desert Mavericks in Rancho Cucamonga, Saturday, April, 30, 2016. (Eric Reed/For The Press Enterprise)RANCHO CUCAMONGA >> When the Dodgers signed right-hander Yaisel Sierra to a six-year, $30 million contract in February, it was an expectation that the 24-year-old Cuban defector would help the Dodgers soon.

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