Jake Arrieta is refusing to take the final weeks of another lost season for the Chicago Cubs for granted. To Arrieta, September represents an opportunity to prove he deserves to stay in the Cubs' rotation next year. Outings like Sunday's against the Philadelphia Phillies will go a long way in pleading his case. Arrieta allowed three hits and one run while pitching into the seventh inning to lead the Cubs in a 7-1 win over the Phillies.