G · Seattle Seahawks · #78

Mason Richman

LG4

College: Iowa
Height: 6'5"
Weight: 307 lb
Experience: 1st season

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Season

Snap share (offense)

2.0%

160th of 160 linemen

PEN/100

0.00

1st of 160 linemen

Line pressure rate

17.6%

14th of 160 linemen

YBC

3.45

2nd of 160 linemen

Ranks compare against the 159 qualifying offensive linemen on the 2025 leaderboard plus Richman.

Week-by-week

Offensive snaps by game

2025 game log

	Usage		Discipline			Line on the field
Game	Offensive snapsSnaps played on offense (Pro Football Reference snap counts, 2013 on).	Snap share (offense)Share of the team's offensive snaps played, in the games the player appeared in.	PenaltiesPenalties called on the player on offense (accepted or declined).	Holding penaltiesOffensive holding calls on the player.	False startsFalse start calls on the player.	Line sack rateSacks per dropback. The line's rate while he was on the field, credited by his share of snaps: public data doesn't say which blocker allowed a sack or opened a hole.	Line stuff rateDesigned runs stopped at or behind the line. The line's rate while he was on the field, credited by his share of snaps: public data doesn't say which blocker allowed a sack or opened a hole.	Rushing EPA per play (line)Expected points added per designed run. The line's rate while he was on the field, credited by his share of snaps: public data doesn't say which blocker allowed a sack or opened a hole.
Wk 5 vs TBL	1	2.0	0	0	0	0.0	19.0	−0.13

How he compares

2025 offensive linemen who qualify · dashed lines mark the group average

X axisY axis

Contract

Rookie deal · signed 2025 with Seahawks

$4.3Mover 4 years

Avg. per year: $1.1M
Guaranteed: $126K 3%
2025 cap hit: $871K 0.3% of the cap
Signed: 2025
Runs through: 2028

2025 · now

2026

2027

2028

Year 1 of 4

Career by season

Career rates are weighted by volume, not averaged across seasons

	Overall			Discipline				Line on the field					On his snaps
Season	GamesGames played.	Offensive snapsSnaps played on offense (Pro Football Reference snap counts, 2013 on).	Snap share (offense)Share of the team's offensive snaps played, in the games the player appeared in.	PenaltiesPenalties called on the player on offense (accepted or declined).	Holding penaltiesOffensive holding calls on the player.	False startsFalse start calls on the player.	Penalties per 100 snapsPenalties called on the player per 100 offensive snaps.	Line sack rateSacks per dropback. The line's rate while he was on the field, credited by his share of snaps: public data doesn't say which blocker allowed a sack or opened a hole.	Sacks allowed by the lineSacks per dropback, leaving out those FTN charted as the quarterback's fault (holding the ball, running into the rush). FTN charting, 2023 on. The line's rate while he was on the field, credited by his share of snaps: public data doesn't say which blocker was beaten.	Line pressure rateDropbacks where the quarterback was hurried, hit or sacked (Pro Football Reference charting, 2018 on). The line's rate while he was on the field, credited by his share of snaps: public data doesn't say which blocker allowed a sack or opened a hole.	Yards before contact per carryHow far runners got before first being touched (Pro Football Reference, 2018 on), the clearest sign of run blocking. The line's rate while he was on the field, credited by his share of snaps: public data doesn't say which blocker allowed a sack or opened a hole.	Line stuff rateDesigned runs stopped at or behind the line. The line's rate while he was on the field, credited by his share of snaps: public data doesn't say which blocker allowed a sack or opened a hole.	Pressure rate on his snapsDropbacks where the quarterback was pressured or sacked, counted over the plays he was actually on the field (nflverse participation, 2016 on; published after each season, so not yet for the current one). Still the whole line's result: public data doesn't say which blocker was beaten. Rates before 2023 run a few points higher, from a change in the source's charting.	Pressure rate vs 4 or fewer rushersPressure rate on his snaps when the defense rushed four or fewer, so no extra blitzers to pick up: the purest public measure of a line's protection (nflverse participation, 2016 on; published after each season).	Sack rate on his snapsSacks per dropback over the plays he was actually on the field (nflverse participation, 2016 on; published after each season). Still the whole line's result.
2025	1	1	2.0	0	0	0	0.00	0.0	0.0	17.6	3.45	19.0	0.0	–	0.0