Nick Bosa sets Pro Football Focus rookie record, plus the highest-graded 49ers vs. Rams

That Nick Bosa guy is pretty good. That much has been made clear this season. The No. 2 overall pick by the San Francisco 49ers has made an impact on a much-improved defense that ranked among the league's worst last season.

Bosa has 41 tackles, nine sacks, two passes defensed, an interception, and a forced fumble through 15 games this season. But it is another statistic that puts him in the Pro Football Focus record books.

With five quarterback pressures on Saturday against the Los Angeles Rams, Bosa now has 69 for the season. That total is the most recorded by a rookie in the Pro Football Focus era, and Bosa has one more game to play this season.

Bosa is the second-highest graded player (87.9) on the 49ers defense this season, behind only defensive lineman Arik Armstead (89.7). Despite his impressive rookie season, Bosa was not among the five highest-graded players on Saturday night against the Rams.

Below are the five highest-graded 49ers players on offense against the Rams. The players with fewer than 10 snaps are noted.

• Ross Dwelley, TE, 95.3 (2 snaps)
• George Kittle, TE, 83.2
• Levine Toilolo, TE, 74.1 (8 snaps)
• Deebo Samuel, WR, 73.1
• Tevin Coleman, RB, 70.0

Below are the five highest-graded 49ers players on defense.

• Fred Warner, LB, 91.5
• K'Waun Williams, CB, 90.9
• Arik Armstead, DE, 87.0
• DeForest Buckner, DT, 75.9
• Richard Sherman, CB, 71.9