2019-20 Track and Field Roster
Hometown Barrington, IL
High School Barrington
AS A FRESHMAN
- Finished eighth in the 400m dash at the Louisville Invitational with a time of 51.39 seconds.
- Placed second in the 400-meter dash (50.74) at the Hoosier Hills meet.
- Copped a PR in the 400-meter dash with a time of 49.73 at the Meyo Invitational.
- Established a PR in the 200-meter dash (23.64) at the Indiana University Relays.
- Earned a runner-up finish with the 4×400-meter relay (3:18.76) at the Blue and Gold Invitational.
PREP AND PERSONAL:
- 2017 IHSA State Champion in the 400m dash.
- Qualified for the USATF Nationals.
- Regional runner-up.
- Set the school record in the 400m dash as a sophomore.
- Holds the Illinois state record in the 4x200m relay, set during his senior season.
- All-State in the 4x200m and 4x100m relays as a senior.
- Attended Barrington High School.
- Native of Barrington, Illinois.
- Son of Luis Cossio III and Helen Mastoris.
- Has two sisters, Anna and Gabby.
- Mother, Helen, ran track and cross country at Illinois.
- Intends to major in business.
- Enrolled in First Year of Studies.