User blog comment:Visually/Don't do "Summer's Over Update" before claim your mastery rewards./@comment-109.80.17.101-20151014125318/@comment-26536836-20151018033530

Yes, if Gameloft didn't reduced finish first credit in mastery challenge, you might have good chance to farming there. But now they reduced it. So Season 9 is best choice before have good farming pro car.