 We'll see temperatures of 90 degrees or above. When you add the humidity, the heat index is forecasted to near 100 degrees on Sunday. As medical director for the USA Cup, Jamie Murphy is in charge of looking out for the health of thousands of players, and he joins me now. Welcome to the program, Jamie. Thank you for having me. Well, Jamie, it is going to be pretty hot. How concerned are you about the heat this weekend?