* Survives adventurous final hole * Bubba Watson finishes one shot back * McIlroy squanders overnight lead (Adds quotes, details) March 6 (Reuters) - Adam Scott went back-to-back, winning for the second successful week by overcoming some closing-hole drama to claim the WGC-Cadillac Championship in breezy Miami on Sunday. The 35-year-old Australian managed to get up-and-down for par after his approach shot nestled inches away from the left-side pond at the finishing hole of the difficult Blue Monster course at Trump National Doral Resort. "I was so lucky for it to stay up inside the hazard line," Scott told NBC Sports. More...