Brad Keselowski will make his 600th career start in the Cup Series, a tribute to the adaptability of a 41-year-old who became NASCAR’s first millennial champion in 2012. Keselowski will try to join Richard Petty as the second driver to win in his 600th start when he races Sunday at Martinsville Speedway, the 0.526-mile oval in Southwest Virginia. Longevity is nice, but the co-owner of Roush Fenway Keselowski Racing knows there’s only one statistic that truly determines his value. Keselowski says: “To be judged as successful in this sport, you have to win and be a contender to win regularly."