Although a few final round mistakes cost Jason Dufner the Crowne Plaza Invitational, his second place finished helped him extend his lead in the FedEx Cup Standings. Zach Johnson, who won the Crown Plaza Invitational, vaulted up 15 spots to third place. Dufner entered the Crowne Plaza Invitational with a 40 point lead over Hunter Mahan. Sunday's second place finish was good for 300 FedEx Cup …
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