Norton, United States: Dustin Johnson continued his hot streak on Friday at the Dell Technologies Championship, firing an opening round five-under 66 for the one-stroke lead over the star-studded PGA Tour playoff field. World No. 1 Johnson picked up where he left off when he won Northern Trust tournament on Sunday as he is off to another roaring start in the second event of the FedExCup Play-offs. The 33-year-old American is in good company at the top of the leaderboard as Aussie Marc Leishman, American Kyle Stanley, Jon Rahm of Spain and reigning Masters champion Sergio Garcia share second after shooting 67s. Three-time Masters winner Phil Mickelson, South Africa’s Louis Oosthuizen and 2014 US Open runner-up Rickie Fowler are three shots off the lead after posting two-under 69s.