Sebastian Valdez


Headshot of Sebastian Valdez
Position: DL
Jersey #: 55
Date of Birth: August 1, 2002
Height / Weight: 6'3" / 301 lbs
College: Washington; Montana State
Drafted: Round , Pick in 2025 by
First Team: (2025)
Last Team: SF (2026)

Career Summary

Sebastian Valdez is a defensive lineman from Spring Valley, California. He played at Montana State and Washington before beginning his NFL career with the San Francisco 49ers.

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High School

Valdez attended Monte Vista High School, where he started for three seasons, earned all-conference recognition twice and recorded eight sacks as a senior.

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College Career

At Montana State, Valdez became a two-time All-Big Sky selection. In 2022, he earned first-team All-Big Sky and Sophomore All-America recognition after leading the Bobcats with 10 tackles for loss and seven sacks; in 2023, he added 27 tackles, 8.5 tackles for loss and five sacks before transferring to Washington.

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Path to the NFL

Valdez completed his college career at Washington and entered the NFL as a defensive lineman. The NFL lists Washington as his college.

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NFL Career

Valdez is listed by the San Francisco 49ers as a defensive lineman and by the NFL as a first-year player.

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Career Accomplishments

Valdez earned first-team All-Big Sky honors and Sophomore All-America recognition in 2022, second-team All-Big Sky recognition in 2023, and Montana State's Ron Warzeka Defensive Lineman of the Year award.

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Playing Style

Valdez played on the interior of the defensive line. His Montana State production included tackles for loss, sacks, forced fumbles, pass breakups and quarterback hurries.

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31501, 00-0040560, 2002-08-01, Sebastian Valdez, Sebastian, Valdez

MFT PLAYER RANKINGS

Current player ranking

#460Defensive Line

MFT Score: 0.0

2026 preseason baseline. Position-relative and updated through the site’s weekly review process.

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