Johnson preparing for emotional weekend
Tied atop the Nextel Cup point standings, Tony Stewart and Jimmie Johnson head to Martinsville Speedway - the circuit's smallest track - with plenty to be confident about.
Stewart, who technically leads the Chase for the Nextel Cup by virtue of having one more win than Johnson this season, dominated at the Virginia track in April, only to watch a broken right front wheel on the 431st of 500 laps derail his chances of victory.
Johnson, meanwhile, won this race a ...
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