Doval was optioned to Triple-A Sacramento on Friday, Alex Pavlovic of NBC Sports Bay Area reports.

The rookie righty has a bright future in relief, but he registered a 7.59 ERA, 1.59 WHIP and 13 strikeouts in 10.2 innings during his first stint with the Giants. Nick Tropeano was added to the big-league bullpen in a corresponding move.

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