On the 18th hole of the final day at last year's American Express, amateur Nick Dunlap had a tricky little 6-footer for par to become one of the most unlikely winners on the PGA Tour in years.

In 12 months of firsts for Nick Dunlap, perhaps the final new thing comes this week: Serving as defending champion of a PGA ...

Here are five storylines to keep an eye on when the tournament starts Thursday: It’s been a year and two PGA Tour victories ...