Martinez (knee/back) declined an outright assignment to Triple-A Syracuse on Friday and elected free agency.

Martinez (knee/back) plans to play winter ball if he feels good early in the offseason, Justin Toscano of The Bergen Record reports.

Martinez (knee/shoulder) resumed his minor-league rehab assignment at Triple-A Syracuse on Thursday and went 2-for-12 with a double and a walk in his first three games back in action for the affiliate.

Martinez (knee) had his rehab assignment shut down recently after he hyperextended his left shoulder on a swing, Justin Toscano of The Bergen Record reports.

Martinez (knee) went 1-for-7 with a solo home run and a walk across two rehab games at Triple-A Syracuse over the weekend.

Martinez (knee) moved his rehab assignment to High-A Brooklyn on Sunday and went 0-for-3 with a walk while playing seven innings in right field.

Martinez (knee) began a rehab assignment at Low-A St. Lucie on Sunday, starting right field and playing three innings while going 0-for-2 with a strikeout.

Martinez (knee) did some light jogging at the Mets' spring training facility in Port St. Lucie, Fla. on Tuesday, Jacob Resnick of SNYtv reports.

Martinez underwent surgery to address the torn meniscus in his left knee Friday, Justin Toscano of The Bergen Record reports.

Martinez was diagnosed with a torn meniscus in his left knee Monday and will miss approximately four months, Anthony DiComo of MLB.com reports.