Temps hit 0ver 90 degrees in the shade at Pennsylvania’s Oakmont Country Club, scene of the 2010 U.S. Women’s Open. Players and their caddies walked slowly across the wide fairways, stood in the steamy bunkers, and measured the undulating greens, all the while holding sun umbrellas over their heads — protection against the unending UV rays of a hot and hazy sun.

The sun and blazing temperatures is only one problem each of the women golfers faces as they enter this tournament. Oakmont, built over 107 years ago, is one of the toughest courses on the planet. The fairways slope, bunkers are killers and the greens—lightening fast. Predictions are that the winning score will be par +. “Everybody knows this golf course is hard,” LPGA player Paula Creamer said, adding, “You have to kind of be less aggressive. You can’t be a hero.” (Read more about the course in this USA Today review.)

Watch the tournament this week, televised on ESPN2 Thursday and Friday and run 3pm – 7pm. The last two rounds on Saturday and Sunday on NBC from 3pm – 6pm.