Pearson v SotiropoulosIt’s not uncommon to see rival fighters put their personal feelings aside and exchange a show of respect for one another after the completion of a clash. However, that wasn’t the case last night at UFC on FX 6 after the headlining rumble between lightweights Ross Pearson and George Sotiropoulos. And, to hear Pearson tell it, it seems there was a pretty good reason for the lack of love.

According to the Ultimate Fighter 9 winner, Sotiropoulos went after one of his coaches while the two were taping TUF: Australia vs. UK.

“That’s why I said I lost all respect for him, and that’s why I didn’t shake his hands afterward. That’s why I’m not his friend now – because he acted unprofessional,” explained Pearson to MMAJunkie after finishing Sotiropoulos in the third round of their main event match-up.

Pearson went on to state Sotiropoulos’ issue with boxing instructor Erin Beach came when the two got into it on Twitter, prompting the Aussie’s attack. Unfortunately for Sotiropoulos, Beach’s own striking savvy came through, allegedly knocking Sotiropoulos out in response.

The situation even caused UFC President Dana White to get involved, who, according to Pearson, “chewed our heads off.”

Sotiropoulos has yet to comment on the matter, as have UFC officials.