It's supposed to be a week of celebration, a time where NASCAR's best drivers prepare for the 10 most important races of the year. Instead of focusing on the opening Chase for the Sprint Cup event Sunday at Chicagoland Speedway, however, the attention this past week has not been on the playoff chances of Dale Earnhardt Jr. or whether Jimmie Johnson can win a sixth title. "The integrity is intact and I wouldn’t question it going forward"-Dale Earnhardt Jr. The sport has instead been entangled with teams blatantly fixing races, forcing NASCAR to respond by leveling record fines and even...