Martin Truex Jr. is safe, for now. But he has his work cut out for him if he plans on competing for another title.

Following a seventh-place finish in the Bank of America 400 in Charlotte, N.C., on Sunday, the Stafford Township native maintained his position among the top six as the field for the NASCAR Cup Series Championship Playoffs was whittled down from 12 to eight. The next three races will determine which drivers end up racing for the title in Phoenix in the season finale.

Truex, the 2017 series champion, joins Kevin Harvick, Joe Gibbs Racing teammate Denny Hamlin, Brad Keselowski, Chase…