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Not the most gracious loser, Harbaugh didn't mince words in detailing how the Seahawks won.
They coached games against each other in college and in the NFL. So it's only fitting that they also exchange verbal barbs with each other on both levels as well.
His comments weren't in the immediate aftermath of Seattle's 42-17 win over his 49ers, but, like Carroll at USC, Harbaugh didn't take kindly to how his team lost.
In response to questioning by Grant Cohn of The Press Democrat about the performance enhancing drug scandals surrounding Seattle, Harbaugh said, "They're winning because they're cheating."
He even went as far to quote his former Michigan head coach, Bo Schembechler. "If you cheat to win then you’ve already lost," Harbaugh said.
In response, Carroll alluded to Jayson Jenks of The Seattle Times that the situation was being dealt with.
In looking at the following quote, he also may have been relaying the message that Harbaugh should worry about his own team.
"I don't know about commenting about anybody else's team, but as far as we're concerned we feel like we've addressed it directly," Carroll said.