The Red Sox starter said, “Tonight it was definitely a rocky one. I had no idea where really anything was going.”

The loss — the Red Sox' second straight — dropped them to 2-2 on their homestand, in need of a victory on Tuesday to claim a winning record in this stretch at Fenway before heading to Yankee Stadium for the weekend.

May's solid outing of two runs over six innings was wasted when Jovani Moran and Jordan Hicks gave up four runs late in the game.

Orioles third baseman Jordan Westburg was hit with another injury Monday when he left the game in the first inning of their game in Boston.

Boston is finalizing a contract with Nathaniel Lowe and could have him in the lineup before Monday’s game against the Orioles, according to major league sources. Lowe, a former Silver Slugger and Gold Glove winner, will be on a one-year major league deal for the rest of the season.

First baseman Nathaniel Lowe signed with the Boston Red Sox, the club announced Monday, after it finalized a deal for a prorated portion of the major league minimum, and the veteran appeared as a pinch hitter during a 6-3 loss to the Baltimore Orioles.