Knicks starting point guard Raymond Felton’s comeback lasted just one game. The cursed point guard sustained a right groin injury with 3:15 left after returning from a six-game absence to rest his lingering strained hamstring. This could be even more serious than the hammy after feeling something “pop.” He will be tested, likely with an MRI, Tuesday. “Very disappointing,’’ Felton said. “Can’t catch a break. I’m wishing for the best. I’ll get reevaluated. Hopefully they tell me something positive. That’s what I’m hoping for right now.’’ Felton collapsed to the court after reaching for the ball while being tugged at by Jameer Nelson. He got up for a moment and went down again and stayed down. “I thought it popped,’’ Felton said. “Maybe it was just from my body being stretched out. Hopefully it’s nothing. Pray for me.’’ Felton enlivened the offense and finished with 13 points and four assists in 25:27. He needed to warm up on the stationary cycle after being taken out of the game to keep his left hamstring loose. Felton said the injury has nothing to do with the hammy, though it could be from overcompensation.