Carmelo Anthony sat out again Thursday night as the Knicks lost, 95-94, to the Thunder, and coach Mike Woodson gave no indication when he would be back. Anthony missed his second straight game with what the Knicks have vaguely called a “sore/stiff right knee.’’ Woodson said Anthony is officially listed as “day to day’’ — the timetable Rasheed Wallace was given when he went down in mid-December. Wallace still has not returned. Woodson seemed a little more serious in discussing Anthony’s absence than he was in Detroit on Wednesday. Woodson said after last night’s game there is a possibility Anthony could play tomorrow when the Knicks host the Jazz before a five-game West Coast trip. He said he would know more today. Anthony may want to be right and ready for the trip that includes his first return to Denver on Wednesday.“I think he’s going to be fine,” Woodson said. “Only the doctors know best.” Dr. Lisa Callahan, the Knicks’ medical director, and Anthony’s agent, Leon Rose, huddled in a room near the Knicks’ locker room for 15 minutes last night to discuss the situation. Rose declined to comment. “I’m not overly concerned,’’ Woodson said. “I think he’s day to day. I think eventually he’ll back on the floor playing.’’ Eventually? Knicks general manager Glen Grunwald said this week he didn’t think Anthony would be out past the back-to-back games against the Pistons and Thunder. Woodson talked about Anthony sitting out “a couple of games.’’ A leading orthopedist at Lenox Hill Hospital, Dr. Leon Popovitz, told The Post on Wednesday stiffness behind the knee can be flaking of the articular cartilage or a slight meniscus tear that didn’t show up on the MRI exam Anthony had Saturday. According to Popovitz, players can compete through both injuries, but Anthony could need arthroscopic surgery in the offseason — if that’s the condition he is suffering from.