Purdy is the story. He went 25-of-34 for 205 yards and 3 touchdowns in Week 1 against the Rams, took zero sacks, and carries a 2026 passer rating of 105.6 into this game. His career line against this franchise spans 2 games: 523 passing yards, 4 touchdowns, 2 interceptions, with a best performance of 313 yards and 2 touchdowns in their December 2024 matchup. San Francisco lost that game 17-29, but Purdy's numbers were not the problem. Sunday he is at home, rested after nine days, and news intel confirms the 49ers deliberately ran a conservative short passing game in Week 1 against a tougher defensive front. The plan changes here. Per Yahoo Sports analysis in the data, San Francisco intends to attack vertically against a secondary with no veteran safety net. On the other sideline, Malik Willis starts his first road game for Miami after posting a 66.9 passer rating in Week 1 with 5 sacks taken and a 20.0% third-down conversion rate. His 2025 numbers last season with Green Bay were strong in limited duty. This is not that role, and this is not that level of opposition.

George Kittle is fully cleared, no injury designation, after his Achilles concern. Shanahan said when asked about the team's contingency planning Sunday: "The team plans to bring in a kicker to the practice squad as a contingency for Sunday." That is a head coach operating from a position of total control. Kittle's most recent meeting with this Dolphins defense: 8 catches for 106 yards. His last 5 games show a 21% target share with a pattern of 5 or more targets per game when he is healthy. Deebo Samuel opened 2026 with 6 catches for 48 yards and a touchdown against the Rams. Mike Evans has a career line against Miami that reads 79 receiving yards per game with 3 touchdowns across 3 games, and the charting data shows 33% of his targets go deep. Christian McCaffrey averaged 6.8 yards per carry in Week 1. De'Stribling is on injured reserve with an ankle injury and out for roughly the next 10 weeks, which only tightens the target distribution among San Francisco's primary weapons.

Jeff Hafley is in his first season as Miami's head coach at 0-1. Kyle Shanahan is in his 10th season with the 49ers carrying an 83-67 regular-season record. Our blended projection is San Francisco 29.2, Miami 14.5. That is a margin of 14.7 points. The market-implied score agrees almost exactly at 29.5 to 14.5. When the model and the market arrive at the same number from different directions, that is usually the picture telling the truth. The 49ers are the right side. The only real San Francisco health question is kicker Eddy Pineiro, listed as questionable with an illness all week, and Shanahan already addressed the contingency. As he said regarding Pineiro: "We feel good he'll get back this season." Even there, the backup plan is in place. This is a well-coached team operating at full strength against a thin, young, banged-up opponent traveling three time zones west.

• Chop Robinson ruled OUT with a concussion removes Miami's only credible pass rusher. With him gone, Purdy faces a nearly frictionless pocket behind an intact offensive line. Nick Bosa becomes the uncontested top pass rusher on the field, and Willis allowed 5 sacks in Week 1 behind a line that has shown no signs of improvement.
• Miami logged 439 rookie snaps in Week 1, 158 more than any other NFL team in the league. Those same first-year defenders now face Evans (33% deep target rate per charting, 79 receiving yards per game career vs. Miami), Deebo Samuel (62 receiving yards per game career across 4 games vs. Miami), a cleared Kittle, and McCaffrey in space. The mismatch is structural, not situational, and it does not correct itself in one week.
• Willis posted a 66.9 passer rating in Week 1 with 5 sacks taken and a 20.0% third-down conversion rate. Miami managed 13 points against Las Vegas. De'Von Achane, their most explosive weapon, was held to 36 rush yards at 3.3 yards per carry. The Dolphins' offensive ceiling is clearly defined heading into this matchup.
• News intel confirms San Francisco plans a more aggressive downfield passing attack Sunday after a conservative Week 1 game plan designed specifically for a tougher opponent. Purdy's career passing numbers in 2 games against Miami, 262 yards per game and 4 touchdowns, suggest this is a favorable matchup regardless of approach.
• Kyle Shanahan enters his 10th season in San Francisco at 83-67 in regular-season games. Jeff Hafley opens his first season as Miami's head coach at 0-1. The coaching gap at Levi's Stadium is as wide as the talent gap.
• George Kittle is fully cleared with no injury designation after his Achilles concern. His most recent meeting with Miami produced 8 catches for 106 yards. He saw 5 targets in Week 1 with 2 catches, meaning the target volume is present and the production can catch up. With Stribling out for the season, Kittle's role in the intermediate passing game expands further.

The Under at 44.5 carries LOW confidence because our projected total of 43.7 sits only 0.8 points below the market line. That minimum-edge caveat matters. Do not overweight it in your portfolio. The Purdy passing touchdown prop at -227 is expensive but HIGH confidence, and the game script supports it: early vertical shots against a young secondary with no Robinson to slow the pocket should produce at least 2 touchdown passes for a quarterback averaging 4 per appearance against this franchise across his career. Kittle's reception prop and the Deebo Samuel yardage prop are our favorite supporting angles in the prop market. If one angle gives you pause on this game, it is the spread compression argument: large lines do sometimes tighten in the fourth quarter as teams rest starters. Willis ran for 39 yards and a score in Week 1, and the Dolphins have enough athleticism to make late drives. But the 14.7-point projected margin does not support fading the favorite. The film on this Miami offense does not inspire confidence that they find a second gear on the road against Nick Bosa.

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