Acce s the Mets beat like never before Join Post Sports+ for exciting subscriber-only features, including real-time texting with Mike Puma about the inside buzz on the Mets Austin Rivers Jersey . PORT ST. LUCIE Brandon Nimmo jumped into Grapefruit League action a bit earlier this year in part because this type of thing might happen. Nimmo, who , began his exhibition season Friday in late February, when early March had become his norm so he could see how his foot would react and give him additional time if the proce s did not go smoothly. As it turned out, his knee needed more time. Nimmo felt some right knee sorene s Saturday that pushed him out of Sundays lineup and has slowed his progre sion. Brandon Nimmo waits for a pitch during the Mets Grapefruit League game against the Nationals on Feb. 28. Corey Sipkin for the NY Post He is expecting to take it easy for a few days and rea se s his knee Thursday, which is three weeks before the season opener. There is time, and Nimmo is not worried. Im not overly concerned, Nimmo said after he hit, threw and ran Monday, the running at 70 percent. In fact, today was really good, a really positive day. Im really positive going forward with this, but I also know that its not 100 percent I got to take it day by day. Explore More Spring sorene s happens, but there is extra attention paid to Nimmo, whose plantar fasciitis carried over from last season and who has been slowly building up before running at 100 percent. After playing a few innings Friday and getting two plate appearances, the progre sion has been slowed. Nimmo still believes he will be ready for Opening Day. Brandon Nimmo runs the bases during a Mets spring training se sion on Feb. 18. Corey Sipkin for the NY POST It just flared up a little bit on me, Nimmo said. Lets nip this in the bud before we take the next step. Starling Marte is feeling really good, manager Carlos Mendoza said, after taking cuts in his first live batting practice Sunday. The next step is hopefully playing in a game in the next few days. It is unclear whether Marte, who has been dealing with knee sorene s since last summer, will play in a minor league or major league game, and it is po sible that he initially serves as DH, but the step would indicate progre s. The fourth outfielder/platoon DH participated in outfield drills Monday. Mendoza is not sure whether , who is in major league camp, will get into Grapefruit League games. Delivering insights on all things Amazins Sign up for Inside the Mets by Mike Puma, exclusively on Sports+ Thank you By clicking above you agree to the and . Enjoy this Post Sports+ exclusive newsletter! The outfielder mi sed much of last season to a hamstring strain. He recovered and played at the end of the year and in the Arizona Fall League, but the Mets are being careful in his progre sion. Robert Covington Jersey