June 29, 2019 By HOLLY CAIN NASCAR Wire Service JOLIET, Ill. – For the vast majority of Saturday’s Camping World 300 at Chicagoland Speedway it looked like another non-too-subtle reminder of how good the NASCAR Xfinity Series triumphant trio has been – championship leaders Cole Custer, Christopher Bell and Tyler Reddick showed the way. Ultimately it was Custer’s time to celebrate this weekend, leading a dominant 151 of the race’s 200 laps to take his fourth Xfinity win of the season in the No. 00 Stewart-Haas Racing Ford and the sixth victory of his career. He earned a solid 2.917-second triumph over…