Delgado did not rule out playing Friday against the Yankees.
"Instead of making it bad, we'll let it settle down a bit," Delgado said. "Hopefully, I should be all right in a couple of days."
Delgado is hitting .262 with 22 homers and 55 RBIs.
REPLAY: Tom Glavine pitched well enough to win most games, but in most games he's not facing Curt Schilling.
Glavine couldn't hold a two-run lead, and the Mets went on to lose 4-2 Thursday night to the Red Sox at Fenway Park.
The loss was the Mets' third straight, their longest losing streak of the season. They were the last team in the majors to lose three in a row this year.
1B Carlos Delgado did not play Thursday at Boston because of soreness in his right ribcage. Delgado is hopeful of playing Friday or Saturday against the Yankees.
RF Xavier Nady missed his second consecutive game because of a bruised right wrist. Nady was hit by a pitch thrown by Boston RHP Julian Tavarez on Tuesday night. He is hopeful of playing Friday or Saturday against the Yankees.
LF Cliff Floyd is close to being reinstated from the disabled list, and the move could come in time for the Mets' weekend series at Yankee Stadium. He went 0-for-2 with a walk Thursday in a rehab appearance for Class A Brooklyn. Floyd sprained his left ankle June 6 at Los Angeles, and he missed 10 games before he was placed on the disabled list.
RHP Orlando Hernandez (4-7, 5.82) will make his 16th start of the season. Facing the Yankees isn't new to Hernandez, who is 0-2 with a 5.25 ERA against his former team, with both decisions coming as a member of the White Sox last year.
LHP Tom Glavine got his fourth no-decision of the season Thursday, but he hasn't lost in 12 starts dating back to April 24. Thursday's no-decision was the only game in which the Mets went on to lose.