Red Sox Notes: Grissom, Pivetta, Bello, Yoshida

Acquired from the Braves for Chris Sale, Grissom entered camp as Boston's expected second baseman. Groin and hamstring issues (plus a recent bout with the flu) kept him off the field for the first five weeks. That paired with a season-ending injury to Trevor Story to leave the Sox very shorthanded in the middle infield. They moved Ceddanne Rafaela in to handle shortstop.

It's been more of a revolving door at second base, where no one has produced. Boston second basemen are hitting an MLB-worst .179/.202/.299 over 125 plate appearances. Enmanuel Valdez and Pablo Reyes took the majority of those reps. Valdez was recently optioned, while Reyes has been designated for assignment.

Grissom, 23, brings quite a bit more offensive upside. He's coming off a .330/.419/.501 line in Triple-A in the Atlanta system. The Braves' loaded infield limited him to 64 big league contests over the past two seasons, but he turned in a solid .287/.339/.407 showing. Grissom collected 10 hits (eight singles and two doubles) over nine games on his minor league rehab stint.

Manager Alex Cora provided positive updates on a handful of injured pitchers this evening (link via MassLive's Christopher Smith). Nick Pivetta is expected to return to the rotation during next week's series in Atlanta. The righty tossed three innings in a rehab start with Worcester yesterday. While the results weren't good — he allowed four runs on three hits and four walks — the Sox don't feel he needs another minor league appearance. Pivetta dominated through two starts before a mild flexor strain sent him to the IL on April 9.

Brayan Bello and Garrett Whitlock are a bit further behind, but both are set to take steps in their respective recoveries. Bello, who went on the shelf on April 21 with lat tightness, will make one rehab start at Double-A Portland and could return to Boston by the end of next week. Whitlock is set to throw a bullpen session tomorrow, his first mound work since an oblique strain knocked him out on April 17.

Despite the injuries, the Red Sox's rotation has been fantastic. Boston starters enter play Friday with an MLB-best 2.03 ERA. They're ninth in strikeout rate and sixth in strikeout/walk rate differential. Kutter Crawford and Tanner Houck have each logged around 40 innings of sub-2.00 ERA ball. Bello, Whitlock and Pivetta were each performing well before going on the IL. Depth arms Cooper Criswell and Josh Winckowski have stepped in effectively in their respective trio of starts.

The news wasn't universally positive for Boston, however. Designated hitter Masataka Yoshida is heading for a second opinion after his recent IL placement, tweets the Boston Globe's Pete Abraham. The Sox initially announced his injury as a left thumb sprain. It's not entirely clear what the initial evaluation suggested, but news of a second opinion is at least somewhat alarming.

Yoshida started the season slowly but had begun to find his form before the injury. He's hitting .275/.348/.388 over 89 plate appearances for the year. Injuries to Yoshida and Triston Casas led the Sox to go outside the organization for Garrett Cooper and Dominic Smith to split playing time between first base and DH.