Ultegra 9sp STI shifters and XT derailleur?

[Floyd Sense]

I tried to ask this question before, but mistakenly said DX derailleur, so here goes again. Will the Shimano Ultegra 9 speed STI levers shift a Shimano XT rear derailleur properly with a 9 speed cluster?

[boudreaux]

Originally posted by Floyd Sense
I tried to ask this question before, but mistakenly said DX derailleur, so here goes again. Will the Shimano Ultegra 9 speed STI levers shift a Shimano XT rear derailleur properly with a 9 speed cluster? Yeah