IF YOU THINK RORY MCILROY has some unfinished business at Augusta National, then meet Megha Ganne. For a record-tying fourth time, the 15-year-old high school freshman from Holmdel, N.J., will be among the 80 girls and boys competing in the Drive, Chip and Putt National Finals the Sunday before Masters Week (Golf Channel, 8 a.m. to 1 p.m. Eastern, April 7). ▸ In three previous appearances, Ganne has finished sixth, T-2 and fourth in her age division. The event, run by the Masters, the PGA of America and the United States Golf Association, is open to juniors 7-15, so this is her last chance to walk off Augusta National’s 18th green a winner in the competition. ▸ The first year “was extremely nerve-wracking because it was the first time in…
