By Larry Fine SPRINGFIELD, New Jersey (Reuters) - While many players bemoan the short turnaround between the British Open and PGA Championship, jammed closer together to accommodate the Rio Olympics golf tournament, the implacable Dustin Johnson just rolls on. The long-hitting, poker-faced American, who won last month's U.S. Open for his maiden major, is in a groove and welcomes the challenge posed by Baltusrol when the PGA Championship gets underway on Thursday. Right now I feel like everything is going pretty well." Johnson tied for second at last week's Canadian Open for his sixth consecutive top 10 finish, a stretch that included back-to-back wins in the U.S. Open at Oakmont and the WGC-Bridgestone and a tie for ninth at the British Open.
