The Worksheet, a comprehensive fantasy football preview by Rich Hribar, breaks down everything you need to know about the Week 4 matchup between the 49ers and Jaguars.
Find a breakdown of every Week 4 NFL game in our Worksheet Hub.
| Jacksonville | Rank | @ | San Francisco | Rank |
|---|---|---|---|---|
| 3.0 | Spread | -3.0 | ||
| 22.0 | Implied Total | 25.0 | ||
| 23.3 | 14 | Points/Gm | 19.7 | 23 |
| 17.0 | 5 | Points All./Gm | 16.3 | 3 |
| 66.3 | 7 | Plays/Gm | 67.3 | 4 |
| 61.7 | 21 | Opp. Plays/Gm | 60.3 | 14 |
| 5.4 | 14 | Off. Yards/Play | 5.4 | 15 |
| 4.7 | 8 | Def. Yards/Play | 4.4 | 5 |
| 41.71% | 17 | Rush% | 40.59% | 19 |
| 58.29% | 16 | Pass% | 59.41% | 14 |
| 32.97% | 3 | Opp. Rush % | 46.41% | 24 |
| 67.03% | 30 | Opp. Pass % | 53.59% | 9 |
- The 49ers are 3-0 but have led for only 28.2% of their offensive snaps (18th).
- The 49ers are the final remaining team without a rushing touchdown.
- San Francisco is fourth in the league in offensive success rate per play (46.5%).
- Jacksonville is second in the league with a 64.3% success rate on defense.
- The Jaguars have allowed 1.50 points per drive, fourth in the league.
- San Francisco has allowed 1.52 points per drive, fifth in the league.
- The Jaguars have a takeaway on a league-best 26.5% of opponent possessions. In 2024, they were dead last at 4.4%.
Trust = spike production for that player
Quarterback
Trevor Lawrence: Lawrence has yet to log a QB1 scoring week through three games, closing as the QB24, QB15, and QB28.
In his first test against an opponent with a defense we believed in last week, versus Houston, Lawrence completed 50% of his passes for 5.5 yards per pass attempt.
Lawrence has completed 55.8% of his passes to open the season, second to last, and ahead of only Cam Ward (54.5%).
This is the culmination of several factors.
Lawrence has not gotten a lot of help from his teammates.
He has a league-high 11.5% drop rate.
He also has an 11.5% inaccurate throw rate (18th).
He has a 24.3% off-target rate on throws 10 or more yards in the air (21st).
Lawrence is a QB2 option here in Week 4.
The San Francisco defense has played well under Robert Saleh, allowing 5.6 yards per pass attempt (third) and 8.2 yards per completion (second).
They have not faced a daunting slate to open the year, drawing Sam Darnold, Spencer Rattler, and Kyler Murray.
How far away is Lawrence from that group?
The 49ers will be without Nick Bosa for the remainder of the season, which carries significant weight.
This defense struggled without Bosa last year.
They went from a 36.6% pressure rate with him on the field (9th) to a league-low 23.6% rate with him off the field.
With Bosa on the field last year, they allowed 6.7 yards per pass attempt (4th) compared to a league-high 8.0 Y/A on his plays off the field.
The 49ers are relying on several young pass rushers surrounding Bryce Huff.
For at least one week, the dropoff was not as steep as it was a year ago.
They have still generated pressure on 36.6% of dropbacks without Bosa with 5.1 yards per pass attempt.
That will be key here.
Lawrence finally faced a good pass rush last week.
After being pressured on only 12.5% and 22.7% of his dropbacks in Week 1 and Week 2, he was pressured 34.9% of the time in Week 3.
When pressured this season, Lawrence is 8 of 22 (36.4%) for 3.5 yards per pass attempt.
49ers QB: We will follow the status of Brock Purdy this week, but with Purdy logging practice time throughout the majority of last week, he is looking closer to returning.
Purdy was QB16 (16.8 points) in Week 1, completing 26 of 35 (74.3%) of his passes for 277 yards (7.9 Y/A) with 2 touchdowns and 2 interceptions.
Considering the San Francisco injuries and the Seattle defense, that was a solid showing with a usable fantasy floor.
He completed 12.7% of his passes over expectation, second in Week 1.
Purdy was under duress all of Week 1.
He was pressured on 43.6% of his dropbacks, the third-highest rate in the league.
When Purdy was kept clean, he was excellent, completing 18 of 21 passes (85.7%) for 222 yards (10.6 Y/A) and a touchdown.
When pressured, he was 8 of 14 (57.1%) for 55 yards (3.9 Y/A) with a touchdown and both interceptions.
Jacksonville is 18th in pressure rate (33.8%) and 26th in sack rate (4.8%).
If Purdy can go, he is a fringe QB1 with a better outlook if Jauan Jennings is available.
If Purdy cannot play, then Mac Jones will draw a third start against his former team and will be a QB2 option.
Jones has been QB8 (21.8 points) and QB17 (13.3 points) over his two starts.
The Jacksonville pass defense has been an early surprise this season.
They have allowed a 60.2% completion rate (7th), 5.7 yards per pass attempt (4th), with a 4.2% touchdown rate (15th).
They have performed well against Bryce Young, Jake Browning, and C.J. Stroud, so this will be a better test in gauging what we have here if Purdy does start.
Running Back
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More Week 4 Fantasy Breakdowns From The Worksheet:
| Matchup | Time |
|---|---|
| Seahawks @ Cardinals | Thursday Night Football |
| Vikings vs. Steelers | Sunday -- 9:30 a.m. ET |
| Commanders @ Falcons | Sunday -- 1 p.m. ET |
| Saints @ Bills | Sunday -- 1 p.m. ET |
| Browns @ Lions | Sunday -- 1 p.m. ET |
| Panthers @ Patriots | Sunday -- 1 p.m. ET |
| Chargers @ Giants | Sunday -- 1 p.m. ET |
| Eagles @ Bucs | Sunday -- 1 p.m. ET |
| Titans @ Texans | Sunday -- 1 p.m. ET |
| Colts @ Rams | Sunday -- 4:05 p.m. ET |
| Jaguars @ 49ers | Sunday -- 4:05 p.m. ET |
| Ravens @ Chiefs | Sunday -- 4:25 p.m. ET |
| Bears @ Raiders | Sunday -- 4:25 p.m. ET |
| Packers @ Cowboys | Sunday Night Football |
| Jets @ Dolphins | Monday Night Football |
| Bengals @ Broncos | Monday Night Football |
