NASCAR is facing a federal antitrust lawsuit involving team owner Richard Childress. The case highlights tensions between teams and NASCAR executives over a new revenue-sharing agreement. Childress was the subject of derogatory texts from NASCAR Commissioner Steve Phelps.

CHARLOTTE, N.C. — The commissioner of NASCAR testified Tuesday in Michael Jordan’s federal antitrust trial against the racing series to the frustrating two-plus years of negotiations on a new revenue sharing model with teams, noting that Jordan’s financial advisor would not compromise on key issues.