Diaz pitched a scoreless ninth inning to record his eighth save of the season during Thursday's win over Washington.
It's probably safe to assume the Seattle brass wants Diaz to succeed as the closer, and he's now pitched four consecutive scoreless innings over his past three outings. Considering the hard-throwing righty is a converted starter and skipped the Triple-A level entirely last season, it shouldn't be surprising that there have been some struggles. His current form is encouraging, and Diaz's fantasy upside remains high.