Climbing Collin, collapsing Ko: golf talking points

The elevation of 23-year-old US PGA Champion Collin Morikawa into golf's top echelons has been as relentless as it has been rapid. Only Tiger Woods boasts a better record than Morikawa's 22 straight weekends played to start his professional career. Morikawa debuted with an impressive tied 14th finish at the Canadian Open on June 9 last year and was rewarded with a world ranking of 1,039.