Ross guarded Foster for most of his time on the court. Stewart guarded Swain. Foster made 5 points this game. I'm not sure Stewart stopped Swain the entire time he was on the court.
With 1:31 left in the game Xavier up five Hunter gets free and had an easy bucket but Ross cuts to the basket and and caused him to miss. Johnson rebounds, Ball gets fouled shooting the three, makes all three free throws and lead gets cut to two - a five point swing.
Ross has a long way to go development wise. He screwed up big time at the end of the game as well as players getting by him on defense. I have no problem with people pointing out his deficiencies. But it's not a balanced assessment of his game.