Tiger Woods is part of another emerging rivalry – between his coaches.

Sean Foley, who has been working with Woods since the PGA Championship, started with an interview last year in which he was quoted as saying about former coach Hank Haney, “Let’s be honest about this, it’s not like he was flushing it with Hank.”

Then came a story posted Wednesday on golf.com when Foley poked fun at Haney once saying he knew Woods from observing, without ever getting to know him.

Haney has been firing back on Twitter ever since.

“If you want to be entertained go to Golf.com and read Sean Foley’s latest version of ripping Hank Haney, all I can say is wow,” was the first of several tweets from Haney.

He sent out some two dozen tweets – mostly retweets from his followers – over the next five hours related to the dispute. Haney’s twitter account is HankDHaney.