Roenis Elias

Boston Red Sox starting pitcher Roenis Elias delivers to the Seattle Mariners during the first inning of a baseball game at Fenway Park on Friday, June 17, 2016, in Boston. (AP Photo/Elise Amendola)

(Elise Amendola)

The Red Sox recalled lefthander Roenis Elias from Triple-A Pawtucket on Thursday and optioned outfielder Bryce Brentz.

The move comes a day after the club used six relief pitchers in a 9-4 loss.

Elias has a 3.98 ERA in his last seven starts for Pawtucket though it's likely he'll serve as bullpen depth for the depleted pen.

Elias also provides rotation depth with Steven Wright missing his Thursday start with shoulder inflammation.

The optioning of Brentz means the Red Sox will have a short bench for at least Thursday's game.

Meanwhile, the club announced righthander Sean O'Sullivan was activated from the disabled list and optioned to Pawtucket. O'Sullivan had been out since July 9 with left knee patellar tendonitis.

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