Oregon has hired Ben Thomas to take over the middle distance and distance coaching duties, filling the major void left by Andy and Maurica Powell, the former associate head coach and assistant coach. Thomas was introduced Monday as the associate head coach for cross country and track and field.

USC jumper Lyndsey Lopes clears the bar during the high jump final. The NCAA Track & Field National Championships are held at Hayward Field in Eugene, Ore. on Saturday, June 9, 2018. (Adam/Emerald)

Houston sprinter Cameron Burrell races toward the finish line to win the 4x100m final. The NCAA Track & Field National Championships are held at Hayward Field in Eugene, Ore. on Friday, June 8, 2018. (Adam/Emerald)

Oregon sprinter Alaysha Johnson hands off the baton to teammate Lauren Rain Williams during the 4x100m prelim. The NCAA Track & Field National Championships are held at Hayward Field in Eugene, Ore. on Thursday, June 7, 2018. (Adam/Emerald)

Alabama thrower Daniel Haugh spins with the hammer. The NCAA Track & Field National Championships are held at Hayward Field in Eugene, Ore. on Wednesday, June 6, 2018. (Adam/Emerald)

Polish pole vaulter Piotr Lisek clears the bar. The 44th Prefontaine Classic is held at Hayward Field in Eugene, Ore. on Friday, May 25, 2018. (Benjamin Green/Emerald)

Benjamin Kigen leaps over the water hazard during the 3000 steeplechase. The 44th Prefontaine Classic is held at Hayward Field in Eugene, Ore. on Saturday, May 26, 2018. (Adam Eberhardt/Emerald)

Before Hayward Field gets its new look for the 2021 IAAF World Championships and possibly in time to host the 2020 United States Olympic Trials, some of the world’s best track and field athletes will compete one more time at the historic stadium for the Prefontaine Classic this upcoming weekend.

Former Oregon hurdler Devon Allen clears the first hurdle in the 110m hurdle race. The University of Oregon hosts the Twilight track and field meet at Hayward Field in Eugene, Ore. on Friday, May 4, 2018. (Adam Eberhardt/Emerald)

BYU athletes Rory Linkletter and Connor McMillan and Oregon runner Tanner Anderson pat each other on the back after completing the 3000m event. The Pepsi Invitational is held at Hayward Field in Eugene, Ore. on Saturday, April 7, 2018. (Sarah Northrop/Emerald)