The lightning strikes hit the course shortly after players had been removed for safety reasons as storms rolled into the area.
Atlanta police say six people injured by debris from a lightning strike at the Tour Championship have been treated and released.
Those injured were seen by emergency medical professionals and taken to the hospital with nonlife-threatening injuries. "Our latest report is that their injuries do not appear to be life-threatening", the PGA Tour said.
"Forecasting the weather, the safety that goes along with it, that is critical to us", said Tyler Dennis, the PGA TOUR's Chief of Operations.
This is the second day in a row where weather has entered the area during tournament play.
One man was killed and five others injured while sheltering under a tree at the 1991 U.S. Open at Hazeltine in Minnesota.
Play has been suspended at East Lake. Then last week at the BMW Championship - the second of the three FedExCup Playoff events - Phil Mickelson almost missed his final round tee time after lightning struck his hotel near the course. We can monitor that.
The lightning that struck at the Eagle Creek golf club left its mark on a tree.
It happened at the PGA Tour Championship in Atlanta yesterday.
Northern Eire's Rory McIlroy was a shot off the tempo on 11 beneath after going by the primary 5 holes at one over par.
"When one did form right over the top of us we suspended play immediately", he said. Russell said organisers encouraged everybody to leave the course and take shelter.
"We have a meteorologist on staff with very sophisticated equipment; we can monitor that and a lot of times we get lucky and we don't get hit with thunderstorms".