Three teams test at "Little Rock"

Three teams spent a day testing on the Martinsville-style short track at Rockingham Speedway. They included Sterling Marlin, John Andretti—and believe it or not—Jimmie Johnson.

Our View With five victories in the last six Martinsville races, you wouldn't think Johnson needed practice. Then again, this is one way he's kept his advantage.

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Yahoo! Martinsville Preview

Things are about to get interesting as NASCAR heads into back-to-back wild card weekends. Don't expect the Chasers to dominate this week like they did early in the playoffs, but for a list of strong dark horses check out this week's Yahoo! Preview (.pdf) to find out.