Chris Sale remains unavailable, rehabbing from Tommy John surgery, and to the best of our knowledge, yet to so much as throw off the mound. It seems certain that we won't see him until, conservatively, after the All-Star break, and how effective he'll be even then is uncertain.
Martin Perez is a serviceable back-end option, but probably little more. Garrett Richards has rebounded from his disastrous first start of the season, but his track record warns against counting on for too much for too long. Tanner Houck is full of promise, but for now, is a work in progress at the alternate site, available only for spot starts
Eduardo Rodriguez? He's seemingly recovered from his Lost Season and has the potential to lead the rotation, but his missing year, coupled with a dead arm alert at the end of spring training brings with it an abundance of caution.
That leaves, for better or worse, Nathan Eovaldi as the presumptive leader of the Red Sox rotation.
In his first two full seasons with the Sox, Eovaldi has been a tease -- possessor of great stuff, yes, but whose results never seem to match expectations. And there's the never-ending question about his durability -- he's had stints on the DL/IL in each of the past four seasons.
But there are early signs, some of them on display in Fenway's annual Patriots' Day matinee, that Eovaldi may be ready to assume the mantle of staff ace.