Duo will look to qualify for NCAA Championships held June 7-10 in Eugene, Oregon.
The Billikens' men's team finished fourth overall, its best ever showing, while registering a school-record 75 points.
Meet begins Saturday morning at 7:45 a.m. (CT) with the 10,000 meters
Saint Louis track and field competed in the prestigious Drake Relays this weekend, and several relay squads recorded school records in the process.
Women place second; men third
Freshman has posted second-best high jump in the A-10 this season.
Tannock Blair (1,500 meters) and Jaryn Blackshear-Bryant (long jump) set school records this weekend.
Harlos is the A-10 leader in the 400-meter hurdles; Reader is tied for the A-10 lead in the high jump.
The Billikens turned in first-place finishes in 11 events.
Action begins Friday with field events at 3 p.m. Friday's running events start at 5:30 p.m. On Saturday, field events begin at 10 a.m., with running events getting under way at noon.
Saint Louis track and field competed in a pair of meets this weekend – the WashU Invite in St. Louis and the Eastern Illinois Big Blue Classic in Charleston, Illinois.
De Backer broke his own school record in the 10,000-meter run over the weekend at the Raleigh Relays in North Carolina, turning in a time of 29:29:17