Tim Hardaway Jr. remained back in New York and underwent tests on his left leg, but the Knicks had no further updates. Hardaway was diagnosed with a stress injury in his lower left leg Sunday and missed his second straight game Monday. Kristaps Porzingis also was out with a sprained right ankle. “There’s concern with anybody when it’s an injury that might be longer than a game or two,” Jeff Hornacek said before the Knicks lost to the Pacers, 115-97, on Monday night. “He’s getting evaluated so we’ll find out more.” It sounds as if Hardaway, the Knicks’ second-leading scorer, will miss far more than two games. Hornacek said he isn’t sure how long he’ll be out.