Highest-graded 49ers: Offense
- Trent Williams, LT, 78.4, 66 snaps
- Colton McKivitz, RT, 77.1, 66 snaps
- Jake Tonges, TE, 75.3, 45 snaps
- Kyle Juszczyk, FB, 72.2, 23 snaps
- Demarcus Robinson, WR, 69.5, 25 snaps
Highest-graded 49ers: Defense
- Fred Warner, LB, 90.9, 68 snaps
- Yetur Gross-Matos, DE, 76.9, 20 snaps
- Bryce Huff, DE, 71.7, 38 snaps
- Luke Gifford, ROLB, 70.5, 19 snaps
- Darrell Luter Jr., CB, 64.6, 68 snaps
Lowest-graded 49ers: Offense
- Kendrick Bourne, WR, 37.6, 44 snaps
- Luke Farrell, TE, 52.6, 32 snaps
- Skyy Moore, WR, 54.4, 8 snaps
- Christian McCaffrey, RB, 56.6, 56 snaps
- Brayden Willis, TE, 58.7, 2 snaps
Lowest-graded 49ers: Defense
- Robert Beal Jr., DE, 39.2, 12 snaps
- Jordan Jefferson, DT, 40.7, 12 snaps
- Mykel Williams, DE, 45.7, 46 snaps
- Sam Okuayinonu, DE, 46.9, 45 snaps
- Kalia Davis, DT, 54.5, 36 snaps
Highest-graded Jaguars
- Hunter Long, TE, 93.9, 22 snaps
- Devin Lloyd, LB, 87.6, 62 snaps
- Travis Etienne Jr., RB, 79.5, 41 snaps
- Jourdan Lewis, CB, 75.9, 66 snaps
- Patrick Mekari, RG, 75.6, 50 snaps
Quarterback play
As far as quarterback play went, Brock Purdy held a slight edge over Trevor Lawrence. Purdy finished the game 22-of-33 for 309 yards with two touchdowns and two interceptions. He also lost a fumble, making him directly responsible for three of the 49ers' four turnovers.
Purdy earned a 61.7 offensive grade, while Lawrence tallied a 60.9 grade.
Highest marks
While Jaguars tight end Hunter Long earned the game's best overall grade (93.9), linebacker Fred Warner's 90.9 defensive grade was the highest among his 49ers teammates.
On offense, left tackle Trent Williams' 78.4 offensive grade led the team.
Blocking
Trent Williams was the game's highest-graded (78.4) offensive lineman. Right tackle Colton McKivitz came in second with a 77.1 offensive grade.
Williams also earned the game's best run-blocking grade (82.3), while McKivitz recorded the team's best pass-blocking grade (75.9).
The lowest-graded offensive lineman was center Jake Brendel, who earned a 62.2 offensive grade.
In total, the 49ers' offensive line surrendered 14 pressures.
Pressures allowed among O-line:
- LG Connor Colby — 5
- LT Trent Williams — 4
- RT Colton McKivitz, RG Dominick Puni — 2 each
- C Jake Brendel — 1
Pass Catchers
The 49ers' pass-catchers tallied four drops. Running back Christian McCaffrey had one, while wide receiver Kendrick Bourne, who earned the team's lowest overall grade (37.6), recorded the other three.
Fullback Kyle Juszczyk earned the team's best receiving grade (78.1), finishing with three catches for 32 yards. No other 49ers player earned a receiving grade above 69.5.
Rushing
Running back Brian Robinson Jr. finished with five carries for 21 yards, earning a team-leading 68.3 run grade. Quarterback Brock Purdy came in second with a 65.5 (two carries for 13 yards) run grade, while starter Christian McCaffrey earned a 60.5 run grade on 17 carries for just 49 yards.
Pass rush
The 49ers defense tallied just five total pressures and no sacks in their first game without defensive end Nick Bosa, who is out for the season with a torn ACL.
Defensive end Bryce Huff was the 49ers' highest-graded pass rusher, logging a team-high two pressures and earning a 68.7 pass-rush grade. Defensive end Yetur Gross-Matos came in second with a 67.8 pass-rush grade.
The lowest pass-rush grade went to rookie defensive end Mykel Williams, who earned a 51.5 mark in that category.
Pressures by 49ers defenders:
- DE Bryce Huff — 2
- DE Yetur Gross-Matos, DE Sam Okuayinonu, DE Mykel Williams — 1 each
Run defense
Cornerback Darrell Luter Jr. was the 49ers' best run defender, earning an 85.6 grade. The lowest mark went to defensive end Sam Okuayinonu, who recorded a 44.1 mark in that category.
Pass defense
Linebacker Fred Warner's 92.0 coverage grade was the best in the game. The next-highest on the team went to safety Jason Pinnock, who earned a 65.8. Warner allowed three catches for just 20 yards on four targets.
Linebacker Dee Winters earned the team's lowest coverage grade (46.4), giving up six catches for 46 yards on eight targets.
Tackling
Dee Winters was the 49ers' highest-graded tackler with an 81.3 grade in that category. The lowest tackling grade (29.3) went to rookie cornerback Upton Stout, who also led the team with two missed tackles.
As a group, the 49ers' defense missed seven tackles against the Jaguars.
Missed tackles by 49ers defenders:
- CB Upton Stout — 2
- CB Darrell Luter Jr., DE Sam Okuayinonu, FS Jason Pinnock, SS Marques Sigle, LB Fred Warner — 1 each
49ers Week 4 snap counts
Offense
66 - Brock Purdy (QB), Colton McKivitz (RT), Connor Colby (LG), Dominick Puni (RG), Jake Brendel (C), Trent Williams (LT)
56 - Christian McCaffrey (RB)
48 - Jauan Jennings (WR)
45 - Jake Tonges (TE)
44 - Kendrick Bourne (WR)
37 - Ricky Pearsall (WR)
32 - Luke Farrell (TE)
25 - Demarcus Robinson (WR)
23 - Kyle Juszczyk (FB)
10 - Brian Robinson (RB)
8 - Skyy Moore (WR)
2 - Brayden Willis (TE)
Defense
68 - Darrell Luter Jr. (CB), Dee Winters (LB), Deommodore Lenoir (CB), Fred Warner (LB), Jason Pinnock (FS), Marques Sigle (SS)
46 - Mykel Williams (DE)
45 - Sam Okuayinonu (DE)
43 - Upton Stout (CB)
42 - Jordan Elliott (DT)
38 - Bryce Huff (DE)
36 - Kalia Davis (DT)
23 - Alfred Collins (DT)
20 - Yetur Gross-Matos (DE)
19 - Luke Gifford (ROLB)
12 - Jordan Jefferson (DT), Robert Beal Jr. (DE)
4 - Ji'Ayir Brown (SS)
Special Teams
22 - Luke Gifford
21 - Siran Neal
19 - Chase Lucas
18 - Robert Beal Jr.
15 - Brayden Willis
14 - Curtis Robinson, Isaac Guerendo, Tatum Bethune
12 - Ji'Ayir Brown
10 - Marques Sigle, Skyy Moore
8 - Darrell Luter Jr., Eddy Pineiro (K), Fred Warner, Luke Farrell, Mykel Williams
7 - Kalia Davis
6 - Alfred Collins, Jake Tonges, Jordan Elliott
5 - Jon Weeks (LS), Thomas Morstead (P)
3 - Austen Pleasants, Colton McKivitz, Connor Colby, Dee Winters, Dominick Puni, Drew Moss, Eli Apple, Matt Hennessy
2 - Jordan Jefferson, Kyle Juszczyk, Sam Okuayinonu
1 - Deommodore Lenoir