The record is 36.96, by Francena McCorory.
David Oliver ran a quick 13.09 in the 100H, Shelly-Ann Fraser-Pryce continued her comeback with a 11.09 win over Barbara Pierre and Chaunte Lowe took the HJ (1.93m).
Van Niekerk trained with Usain Bolt all week leading up to the race.
At the Racers GP he'll run the 300m against LaShawn Merritt.
Jenn Suhr won the PV in 4.82m after failing in an attempt at breaking her won WR.
Non-distance highlights: Jeremy Taiwo broke the MR in the heptathlon winning with 6273 points. Manteo Mitchell and Natasha Hasting won the 300, Sam Kendricks the PV, Will Claye (LJ), Christian Cantwell (SP).
Trell Kimmons ran 6.51 to beat Asafa Powell by .01 in the 60. Michelle-Lee Ahye won the women's 60 (7.15), Tiffany Townsend the 300 (36.74). Mary Saxer won the PV as Jenn Suhr was only 3rd. Ryan Whiting (SP), Chaunte Lowe (HJ) also won.
Poland's Adam Kszczot won the 800 (1:46.32) and Zakaria Mazouzi took the 1500 (3:39.21). On the women's side, Poland's Renata Plis won the 3K (8:53.74). Poland’s Anna Rogowska set the pole vault WL at 4.76m, 400 Olympic silver medalist Luguellin Santos was only 3rd in the 300 and Kellie Wells came up 2nd in the 60H.
World youth bronze medallist Kendell Williams set a heptathlon US indoor junior record at the New Mexico Cherry and Silver Invitational in Albuquerque with 4302 points. At the same meet Jermaine Brown tied the WL with 20.68, Dee Dee Trotter won the 200 (23.38) and 400 (51.82) and in Canada, Olympic silver medalist Luguelin Santos set a 300 NR with 33.27.