Tyrannosaurids didn't use their claws in combat

Rothschild (2013) suggested that many of the facial and postcranial scars in tyrannosaurid specimens are in fact caused by claws of the other tyrannosaurids. However, the evidences suggested by Rothschild (2013) are very weak. Tooth marks can have very different shapes with real tooth sections or shapes, and multi-ton giants like tyrannosaurids would have been impossible to kick each others' faces. Also, the very short, range limited tyrannosaurid forelimbs would be impossible to hit the opponents' faces.