FORT MYERS, Fla. -- Red Sox manager John Farrell supplied the missing piece to his rotation puzzle for the first series in Philadelphia, announcing that Justin Masterson will get the nod in the finale of the three-game set on April 9.
Buchholz could come back to pitch the second game in New York on regular rest, meaning he would pitch two of the first five games of the season.
Either way, the Red Sox will need a fifth starter for the second or third game in New York, and it still might be Joe Kelly, the right-hander who is on the mend from a biceps injury he had earlier in camp.
Kelly will start the season on the disabled list, and the retroactive date will likely be far back enough that he can pitch in New York if he's ready.
Kelly will pitch a Minors rehab game Monday -- the same day the Sox open their season.
It remains to be seen if that one rehab stint will be enough for Kelly to join the active roster. He threw 65 pitches in a Minors game Wednesday.
Ian Browne is a reporter for MLB.com. Read his blog, Brownie Points, and follow him on Twitter @IanMBrowne. This story was not subject to the approval of Major League Baseball or its clubs.