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 Cardinals.

Find a breakdown of every Week 4 NFL game in our Worksheet Hub.

ArizonaRank@San FranciscoRank
14.0 Spread-14.0
15.25 Implied Total29.25
22.316Points All./Gm14.05
69.025Opp. Plays/Gm61.79
5.86Off. Yards/Play6.04
5.319Def. Yards/Play4.23
42.51%18Opp. Rush %23.24%1
57.49%15Opp. Pass %76.76%32

  • The 49ers are averaging 2.4 more yards per play than their opponent on first downs, the largest differential in the league.
  • San Francisco is averaging 6.0 scoring plays per game, second to only Miami (7.0).
  • The 49ers are averaging a first down or touchdown once every 3.19 offensive snaps, seventh in the league.
  • The Cardinals are averaging a first down or touchdown once every 3.35 offensive snaps, eighth in the league.
  • 43.9% of Arizona’s rushing attempts have gained five or more yards, the highest rate in the NFL.
  • 44.3% of the rushing attempts against Arizona have gained five or more yards, the second-highest rate in the league.
  • 62.9% of the Arizona rushing yards have come on explosive runs (10 or more yards), the highest rate in the league.
  • 53.4% of the San Francisco rushing yards have come via explosive runs, third in the league.

Trust = spike production for that player


Brock Purdy: Purdy is coming off his best game of the early season, completing 25-of-37 passes for 310 yards and two touchdowns last Thursday against the Giants.

The Giants blitzed Purdy on 82.1% of his dropbacks, but he beat the blitz for 8.4 yards per pass attempt and both of his touchdowns.

Arizona has been a more passive defense under Jonathan Gannon.

The Cardinals have blitzed just 11.7% of the time (31st) and played man coverage on just 18.8% of snaps (25th). They have pressured the opposing quarterback just 29.8% of the time (27th).

When Purdy has not been pressured, he is behind only Tua Tagovailoa in rating (118.8), completing 44-of-56 passes for 541 yards (9.7 Y/A).

Arizona has played well to open the season based on expectations, but they have allowed 7.2 Y/A (22nd) and have allowed 10.9 yards per completion (25th) when they have not pressured the quarterback.

Purdy has thrown multiple touchdown passes in eight of his past nine regular season games. He is right on the QB1/QB2 line.

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