Sasuke vs. Gaara!! (サスケVS我愛羅!!, Sasuke Bāsasu Gaara!!) is chapter 111 of the original Naruto manga.
As the fight between Sasuke and Gaara commences, Kakashi apologises to Sakura for worrying her by being late. He then remarks to Guy about the ANBU presence in the stadium, Konoha not knowing how or when they will be attacked. Naruto, knowing how dangerous Gaara is, realises that the only person who can currently satisfy his blood-lust is Sasuke. At the same moment, Sasuke begins attacking Gaara fast enough to bypass his Shield of Sand, oddly reminiscent of Lee's fighting style.