Though Frank Ocean is going to win every award, it might be worth tuning in to the Grammy Awards this Sunday (February 10, 2013) if only to witness the possibility that Taylor Swift might bump into fellow country star Carrie Underwood. According to an insider, Grammy executives have been ordered to keep Swift, 23, and Underwood, 29, "from crossing paths." Their reason? "They hate each other!"

The feud appears to have begun when Underwood and Brad Paisley mocked Swift's split from Conor Kenned while hosting the Country Music Association Awards in November. "The greatest trade of the year had to be the Kennedy family. They somehow traded Arnold Schwarzenegger for Taylor Swift," Paisley joked about Swift dating the 65-year-old bodybuilder's nephew through marriage. When Underwood whispered in his ear that the young couple had split up, Paisley feigned disbelief "What? Why don't I ever hear about these things?...I'm the last one to know. Are they ever gonna get back together?" Underwood, of course, said, "Never, ever." The whole thing was rather cringe-worthy, but was enough to get Taylor's back up, according to the insider. A source close to the singer - known for writing songs about her failed relationships - told US Weekly magazine, "Taylor feels Carrie is always rude to her, so she steer clear of her."

It's set to be a big night for Swift in particular, who will open the show at Los Angeles' Staples Center on Sunday." What's interesting is we presented this performance to the Grammy committee . . . and they said, 'Okay, cool, you have a performance spot.' And then like a week ago they call us and are like, 'Oh, by the way, you're opening the show," Swift told Ryan Seacrest Thursday. Despite her prominent live slot, it's unlikely that Swift will walk away with anything too prestigious at the biggest night in music, with Frank Ocean, Fun, Mumford & Sons and Goyte likely to lead the charge for the major prizes. 

Watch Carrie Underwood 'Dissing' Taylor Swift At The Country Music Association Awards: