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What we learned: Kyle Shanahan can adjust his scheme to his personnel better than any offensive coach in the league. The 49ers were without Jimmy Garoppolo, George Kittle, Deebo Samuel, Raheem Mostert, Tevin Coleman and others. Jordan Reed left the game in the second quarter. The hope going in might have been to eke out an ugly win over the Giants. Instead, the 49ers produced the second-most efficient offensive performance of the week, behind only the Chiefs. They had 29 first downs and 420 yards with Nick Mullens, Jeff Wilson, Kendrick Bourne, Ross Dwelley and others. Mullens threw for 343 yards and averaged 9.5 YPA. ...

Winning the way they did Sunday against the Giants is a testament to the coaching staff considering all the injuries. But it will be hard navigating those hits for too long.

After spending a week on the East Coast, shuttling between MetLife Stadium's turf and West Virginia, they head home to lick their copious wounds ... though reinforcements, including WR Deebo Samuel, seem to be inbound.

What we got wrong: Nick Bosa would make the leap to 16 sacks and finish in the top five of Defensive Player of the Year voting.

Unfortunately for Bosa and the Niners, his breakthrough season never had the chance to take off, as he suffered a torn left ACL early in the second game of the season. Bosa was very good in the first week, and there's no reason to think he wasn't going to have a huge year before his injury. Alas, Bosa's injury means his season is over and his first double-digit-sack season will have to wait at least another year as the Niners look for new ways to generate pressure on the quarterback. -- Nick Wagoner

No one's experienced worse injury luck than the 49ers this season. Luckily, they've had the schedule gods on their side. Kyle Shanahan's merry band of backups was more than good enough to take out the wretched Jets and Giants in consecutive weeks, and the Niners are 2-1 despite suffering a season's worth of setbacks in one month. Nick Mullens thrived in his first start in 21 months, throwing for 343 yards and a touchdown without the help tight end George Kittle, receiver Deebo Samuel or running backs Raheem Mostert and Tevin Coleman. How dominant was the Mullens-led offense vs. the G-Men? It ran 73 plays, held the ball for nearly 40 minutes and never punted ... the first time San Francisco managed that feat in nearly 27 years. That sound you hear is Jimmy Garoppolo furiously taping up his injured ankle.