Martin Truex Jr. will miss NASCAR Sprint Cup practice and qualifying session Friday at Michigan to support his cancer-stricken girlfriend.
Furniture Row Racing said Truex is skipping the sessions to be with his longtime partner and girlfriend, Sherry Pollex. She was recently diagnosed with ovarian cancer.
Matt Crafton will drive Truex's No. 78 car Friday.
Truex will rejoin the team Saturday and race Sunday.