About

Kaleb Mathis is the 5‑foot‑9, 155‑pound slot receiver who wears No. 13 for the University of Colorado Buffaloes. A sophomore on the roster, he studies pre‑business while trying to carve out a bigger role in Coach Prime’s high‑octane offense. On the stat sheet, he already owns six catches for 38 yards, and on special teams, he delivered a forced fumble during his redshirt‑freshman year—proof that he isn’t afraid to throw his weight around despite a modest frame.

Fans know him by the self‑picked nickname “Silent Assassin,” a nod to his quiet personality and sudden burst after the snap. The branding even spawned a “K13 Silent Assassin” apparel line that pops up across his social channels.

Bios

Position:	Wide Receiver
Weight:	155
Hometown:	Arlington, Texas
Prev School:	Pre-Business
Height:	5-9
Class:	Sophomore
High School:	Grace Prep
Kaleb Mathis Net Worth	$150,000

Before Fame

Born on February 20, 2004, in Arlington, Texas, Kaleb grew up with football in his DNA. A birthday tweet from 2019 marked his 15th, giving us a handy timestamp for the future Buff.

He first suited up at Trinity Christian in Cedar Hill, where his father was on the staff, then transferred to Grace Preparatory Academy. Over two varsity seasons at Grace Prep, he reeled in 103 passes for 1,567 yards and 14 touchdowns, helping the Lions to a 10‑1 mark as a junior. Those eye‑catching numbers—and dad’s new coaching post in Boulder—smoothed his jump to college ball.

Trivia

• The merch: Kaleb capitalized on NIL rules early, pushing a black‑and‑gold clothing line under the “Silent Assassin” banner—complete with hoodies, tees, and even a limited K13 jersey.
• The vlogs: He runs an upbeat YouTube channel. One fan‑favorite upload, “Cooking with Kaleb!! Mom Edition,” shows him trading routes for recipes alongside his mother in the family kitchen.
• The big play: His first highlight at CU wasn’t a catch but a special‑teams punch‑out that flipped possession late in 2024.
• Practice fireworks: A spirited film‑room exchange with two‑way star Travis Hunter went viral when Hunter barked “shut your ass up” after a mis‑timed route—evidence that even coaches’ kids get called out in Boulder.

Family Life

Kaleb is the oldest son of Kevin and Kimberly Mathis. Kevin played a decade in the NFL, then moved into coaching, and now oversees Colorado’s cornerbacks. Kimberly, a business‑minded creative writer, has been a steady voice of encouragement—and the occasional sous‑chef in those YouTube videos.

Little brother Kole followed the family path, signing on as a freshman cornerback for the Buffs in 2025. Football chatter dominates holiday dinners, but the Mathis household also celebrates academics, community work, and apparently, adventurous home‑cooking.

Associated With

• Deion “Coach Prime” Sanders – the head coach who first worked with Kevin Mathis at Jackson State and then welcomed both father and son to Colorado. Kaleb often calls playing for Sanders “a masterclass in confidence.”
• Shedeur Sanders – the Buffs’ record‑setting quarterback whose timing with Kaleb sharpened during countless after‑practice reps. (Shedeur even models the K13 hoodie on occasion.)
• Travis Hunter – two‑way phenom, occasional sparring partner in film review, and a vocal standard‑setter for Kaleb’s receiver room.
• Kevin Mathis – dad, mentor, and the rare position‑coach parent who critiques routes at breakfast and technique at practice.