Board Thread:Versus Debates/@comment-26005711-20150530210611/@comment-3965545-20150611021109

at Riptide, Itachi himself said that in his current state, after using tsukuyomi twice(one against Kakashi and then again against Sasuke leaving him low on chakra, and it was confirmed he got his illness after killing his clan but before he returned to Konoha.. by Kisame's statement about him being sick and needing to rest) that he could tie Jiraiya then as they were leaving Kisame pretty much thinks he is full of shit and says they shouldn't be retreating because Itachi could take Jiraiya himself(chapter 148 page 7 Kisame says something along the lines of "Why are we running away? You should be able to..") So It short, neither of the 3 Sannin could take Itachi.

edit

Izuna, Obito, and Itachi in one v one against any of the Sannin? they win no doubts. 3 v 3? They can beat the 3 Sannin for sure.