Angel Heredia's 38.14 300 hurdles went to the top of the 5A rankings.
You can access every track event and heat from the 2017 Mullen Invitational here.
And, I've linked a few of the biggest track races of the day here (all top heats) for your convenience:
Boys 300 Hurdles (Angel Heredia, 38.14)
Girls 100 Meters (Arria Minor, 11.54)
Girls 200 Meters (Arria Minor, 23.51)
Boys 1600 Meters (Tanner Norman, 4:17.99)
Boys 400 Meters (Nik Chappee, 47.67)
Girls 100 Hurdles (Semaye Johnson, 14.51)
Girls 4x200 (Overland, 1:43.73)