It's the last of four Texas tournaments for the PGA Tour this season, and Jordan Spieth is still looking for what would be his first win in his home state. I say "still" a tad tongue in cheek (he's 22). But with the emphasis he puts on the Texas events, it's mildly surprising it hasn't happened yet.Vijay Singh made a passing reference to Zika last month when the 53-year-old Fijian decided not to play. Marc Leishman of Australia also mentioned Zika, and for good reason. His wife nearly died last year of toxic shock syndrome and her immune system remains weakened.