Honors & Awards
» Academic All-Big Ten (2022)
» Nebraska Scholar-Athlete Honor Roll (Spring 2022, 2023)

2023 (Sophomore)
Koby Bretz played in 10 games as a sophomore and recorded three tackles. He made his season debut at Colorado and had one tackle. Bretz had a career-high two tackles against No. 2 Michigan.

2022 (Redshirt Freshman)
Bretz appeared in one game in 2022, playing on special teams at No. 3 Michigan. He also made the travel roster for the Huskers' season-ending trip to Iowa.

2021 (Redshirt)
Bretz played in one game as a true freshman in 2021, making his Husker debut in the secondary against Fordham.

Before Nebraska (Omaha Westside HS)
Bretz helped Omaha Westside to a state runner-up finish as a junior and a state championship as a senior. He was one of five Nebraska natives in the Huskers' 2021 signing class.

In his senior season, Bretz had 54 tackles, 1.0 tackle for loss, three interceptions, four passes defended, one forced fumble and one fumble recovery, according to MaxPreps. On offense, Bretz led Westside with 37 catches for 583 yards and eight touchdowns. He added nearly 200 return yards. In Westside’s state championship game win, Bretz made nine tackles, broke up three passes, had three catches for 78 yards and a touchdown and had 80 return yards. Bretz was named to the Omaha World-Herald All-Nebraska and Lincoln Journal Star Super-State teams as a senior. As a junior, Bretz earned honorable-mention all-state honors from both the World-Herald and Journal Star. Bretz was also an accomplished diver for Westside. He took second place at the state meet as a sophomore and third place as a junior. 

Bretz chose Nebraska over several other scholarship offers, including Buffalo, Kansas State and Wyoming. He was ranked among the top 50 safeties nationally by Rivals.

Koby was born on Oct. 22, 2002. He is the son of Ed Sewa-Dovi and Sarah Kramer. He is majoring in child, youth and family studies. Bretz has volunteered his time with the Nebraska Football Road Race, local hospital visits and Nebraska’s Day of Service.