The Mets initially indicated Dillon Gee would miss just two starts when he was put on the disabled list May 11 with a strained back muscle.
He’s already missed three starts and will now travel to Port St. Lucie to start a new rehab program.
“We’re going to go with the slow-and-steady approach this time,” Gee said (ESPN, May 27).
Gee said he progressed too quickly and aggravated the muscle this past Sunday when trying to throw off a mound.
He told reporters he currently has no definitive timetable for his return.