Paul Casey became the first player to successfully defend his Valspar Championship title when he secured a hard-fought one-stroke win over Louis Oosthuizen and Jason Kokrak in Florida on Sunday. Overnight leader Casey eked out a one-over-par 72 in the final round, which was good enough to fend off his rivals in demanding, breezy and firm conditions at Innisbrook Resort in Palm Harbor. With two putts he finished at eight-under 276 for his third victory on the PGA Tour in 250 career starts.