Los Angeles Dodgers manager Dave Roberts spoke honestly on Yoshinobu Yamamoto's struggles on Sunday against the New York Yankees.

Dodgers starter Yoshinobu Yamamoto struggles with his splitter and fails to extend what had been an impressive string of performances against the Yankees.

Yoshinobu Yamamoto is developing into the star the Dodgers envisioned when they made him the highest-paid pitcher in the sport a year ago.