How PFF graded Purdy, 49ers in frustrating loss to Cardinals

The 49ers' PFF grades for their 24-23 loss to the Arizona Cardinals on Sunday at Levi's Stadium reveal an alarming trend that the team needs to curtail. Three turnovers by the offense ultimately made a win impossible for San Francisco, but their 12 missed tackles, following 17 missed the week prior, is a disturbing statistic for a defense that has been routinely touted as one of the best in the league. 49ers missed tackles by week: Week 1 vs New York Jets: 9 Week 2 vs. Minnesota Vikings: 3 Week 3 vs. Los Angeles Rams: 2 Week 4 vs. New England Patriots: 17 Week 5 vs. Arizona Cardinals: 12 On Sunday, according to PFF, defensive end Nick Bosa led the pack with three missed tackles. While the All-Pro had stand-out plays in other areas of the game, including four stops, two pressures and an interception, the pass rusher's mistakes did not help the defense get off the field. Rookie safety Malik Mustapha, who came into the game for Talanoa Hufanga after the veteran suffered a wrist injury, missed two tackles as did linebacker De'Vondre Campbell. Hufanga, safety Ji'Ayir Brown, cornerbacks Deommodore Lenoir and Charvarius Ward and defensive tackle Kevin Givens all were charged with one...