Golf Channel · May 28, 2017
Welcome to summer: Heat index reaches 108
FORT WORTH, Texas – Sunday’s third round at the Dean & DeLuca Invitational was a difficult welcome to summer.
The heat index reached 108 degrees at Colonial and the humidity hovered around 60 percent, sending players scrambling for shade and water and one caddie to the medical tent.
Jordan Spieth’s caddie, Michael Greller, left the course after 11 holes to seek medical attention for heat exhaustion.
“It was tough out there because it was so hot. Legs getting Jello-y. Real loose,” Spieth said. “I had a little lapse in concentration for a few holes, just a dizziness where anybody would have where you're just kind of not fully there.”