Evans was replaced by Rafael on 11 minutes, while Jones fell awkwardly after a clash with Jon Walters and had to be carried off just before the break. The injury forced a major reshuffle in the United ranks with Michael Carrick switching to centre-back and Wayne Rooney dropping into midfield as Danny Welbeck came on in place of Jones and into Rooney's spot in attack.
"It looks like Jonny Evans has a calf strain and Phil Jones has a concussion," Moyes told MUTV after the game.
"Phil is okay. He was unconscious for a period during the game, but he’s had a head scan and the hospital has checked him and there were no problems. The medical team did everything right and we got him off the pitch as quickly as possible."
These latest knocks were the latest in a long line of injuries in the squad this season. Moyes is still without Rio Ferdinand, although the defender is expected to be available soon, while Marouane Fellaini has only just recovered from a wrist operation. Meanwhile, Moyes confirmed on Friday that a "bad hamstring injury" could keep Nani out for another month.