This is a tough blow for the Diamondbacks, who are off to a 2-4 start this season. Marte is off to an incredible .462/.500/.846 start to the season, already posting 0.7 fWAR in six games. The long-term outlook is as of yet unclear. That said, the initial plan was to have Marte assessed with an MRI tomorrow in Phoenix before making an decision, per MLB.com’s Steve Gilbert (via Twitter). That they went ahead and made the move prior to that evaluation isn’t a great sign.
Young, 26, came to the Diamondbacks from the Cardinals as part of the Paul Goldschmidt deal. He made his Major League debut last season with 34 plate appearances across 12 games. Young, like Marte, can move around the diamond defensively. Tim Locastro is playing centerfield today, where Marte started each of the first six games.