Tony Kornheiser stepped down Monday after three seasons as a commentator on ESPN's "Monday Night Football," where he will be replaced by former Raiders and Buccaneers coach Jon Gruden.

Kornheiser cited the grind of the travel schedule, which from the start has been his biggest complaint about the job. He has an intense fear of flying and tried to avoid doing so whenever possible.

Only six of ESPN's regular-season games in 2009 are scheduled for the Eastern Time Zone (Kornheiser lives in Washington, D.C.), and there are games in Oakland, San Diego, Denver and San Francisco.

"When I looked at the upcoming schedule it was the perfect storm that would've frequently moved me from the bus to the air," he said in a quote provided by ESPN.

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