Player Story
K.J. Costello story
K.J. Costello built his college career from 2016 through 2020 as a quarterback from Coto De Caza, CA wearing No. 3, spending time with Mississippi State and Stanford. The clearest part of K.J. Costello's career was his passing role: 7,403 passing yards, 55 touchdown passes, 997 attempts, and 31 rushing yards across 35 career games in the available record. His largest box-score season came in 2018 with Stanford. Those numbers show where he fit, how often the ball or action found him, and how his role developed over time.
Quarterback careers are usually judged first by volume, efficiency, and scoring chances. His career also includes 31 rushing yards and 1 tackle, giving the story more than a single-category snapshot. With 35 career games in the available record, his career has enough shape to show both opportunity and production across Mississippi State and Stanford.
The arc is straightforward: K.J. Costello moved through the depth chart, found a larger role, and turned that opportunity into production that can be understood through standard football numbers.