Martin Truex Jr. led early at Kansas Speedway, but he suffered a penalty on a restart and lost the lead.
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NBC NASCAR analyst Steve Letarte explained that Truex went below the white line before he was allowed to do so, and he was penalized.
Kevin Harvick also went below the white line and followed Truex, but he wasn't penalized because he wasn't the one to establish himself below the white line. He was simply following Truex, so only Truex received the penalty.
The good news for Truex is that he already has a win this round and has clinched a spot in the Round of 8. Of course, he certainly wants a win today, but it's not as if the penalty will ruin his championship aspirations.