Troll on: Richard Sherman signing autographs with message for Michael Crabtree

Seattle Seahawks cornerback Richard Sherman doesn't seem like the type who has any desire to diffuse a rivalry.

We've seen, especially when he's wired for sound for a game, that he can be an agitator. That works for some players, and it certainly works for Sherman, one of the best cornerbacks in the game. Someone else might not want to poke the bear and remind the 49ers and Michael Crabtree of the NFC championship loss and his riled-up comments afterward, but Sherman went ahead and did it.

Sherman is signing autographs of his NFC-clinching tipped pass, intended for Crabtree in the end zone, with the additional message: "Sorry Crabtree."

That's a bit of a takeoff on Sherman's infamous comments to Erin Andrews after the game, when he called Crabtree "sorry." He apologized for attacking Crabtree shortly afterward, but the autographs will add a little more gas to the fire. And there's nothing wrong with that. The 49ers-Seahawks rivalry is one of the highlights of the NFL right now.

And if we've learned nothing else about Sherman, we can safely say that he really won't care what Michael Crabtree or anyone else thinks about it.

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Frank Schwab

is the editor of Shutdown Corner on Yahoo Sports. Have a tip? Email him at shutdowncorner@yahoo.com or follow him on Twitter! Follow @YahooSchwab