Not even two weeks have passed since pitchers and catchers reported to spring training, and already the Red Sox are digging into their uncertain rotation depth. The Sox have known for months that Eduardo Rodriguez will not be available to open the season, but are now convinced Steven Wright won’t be either. “It’s looking that way,” manager Alex Cora said yesterday. So, with Opening Day little more than a month away, the Red Sox find themselves in a familiar spot, trying to sort through the remaining options. It might be no big deal, or it might be an ill-advised gamble, but president of baseball operations Dave Dombrowski said there’s no reason to change it. “If (Wright) is not ready, no, we feel comfortable with our internal options,” Dombrowski said in an email. The Red Sox were in a similar spot several times last season as Wright, Rodriguez and David Price all missed starts due to injuries. The Sox wound up giving two early-season starts to veteran Kyle Kendrick — his 12.96 ERA did not lead to a third start — before claiming Doug Fister off waivers. Fister made 16 starts including Game 3 of the American League Division Series. Despite knowing Rodriguez and Wright were recovering from knee surgeries, though, the Red Sox did not make a move this offseason to replace Fister or find a new version of Kendrick.