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Biggest roster weaknesses for 49ers, Cardinals, Rams, Seahawks - NFL
By Vince Verhei
Arizona Cardinals
Biggest post-draft weakness: Offensive line
This is going to create some controversy. Some observers tabbed Arizona's line as one of the most improved units in the NFL. The Cardinals signed three-time Pro Bowler Mike Iupati away from San Francisco in free agency and then spent their first-round draft choice on Florida's D.J. Humphries.
The numbers see things very, very differently. Our game charters credited Jared Veldheer with one blown block every 46 snaps played in 2014, ranking 15th-best among left tackles and 30th among all tackles. That's not bad, just eminently mediocre. The real issue, though, is Iupati, whose recent performance has not lived up to his reputation. His rate of one blown block per 37 snaps played ranked 32nd out of 37 qualifying left guards (minimum 400 snaps) and 97th out of 108 interior linemen. This wasn't a one-year fluke, either; in 2013, he had virtually the same rate (one every 36.8 snaps). In total, we tabbed Iupati with 20 blown blocks on pass plays last season. Only one interior lineman had more: Ted Larsen, Arizona's left guard last season who will now move over to center.
At the other end of the line, all indications are that Humphries will spend a year on the bench, backing up Bobby Massie, who wasn't terrible last year (42.4 snaps per blown block, 17th among right tackles). Projected right guard Jonathan Cooper was very effective in limited action in 2014 (73.6 snaps per blown block), but he has struggled to stay healthy, with only two starts in his first two seasons.
There is upside here if Iupati can regain his dominant 2012 form, if Cooper can stay healthy, and if Humphries can develop sooner than expected. But that's a lot of "ifs."
San Francisco 49ers
Biggest post-draft weakness: Linebacker
This figured to be one of San Francisco's strengths in 2015, but they were undone by a pair of surprise retirements. Five-time All-Pro Patrick Willis, 30, called it a career in mid-March. Though his 2014 season was limited to six games due to a toe injury, he was still effective when healthy, with some of the best pass coverage numbers of any linebacker in the league. In the end, Willis cited his bad feet as the biggest factor in his decision to retire.
If Willis' retirement was unexpected, Chris Borland's departure a week later was downright stunning. The rookie had 21 defeats (plays that stop an offense on third down, result in a loss of yardage, or force a turnover), ranking in the top 50 in the league, despite playing just 46 percent of the team's defensive snaps. With a full season, he might have challenged J.J. Watt's league-leading total of 43 defeats. It was a tantalizing glimpse of what Borland might have delivered in the future, but he walked away from the game, expressing concerns over possible head trauma. He goes down as one of the best one-year players ever.
So what's left? NaVorro Bowman is a three-time All-Pro and still only 27 years old, but he missed all of last season after tearing his ACL and MCL in the 2013 NFC Championship Game and only recently returned to practice. Michael Wilhoite wasn't much of a factor in his 16 starts; he had fewer run tackles than Borland despite playing more than twice as many snaps. And Nick Moody has barely played since the 49ers took him in the sixth round in 2013.
There are question marks on the outside, too. Ahmad Brooks has been a rock in San Francisco for four years now, but he missed three games last season and just turned 31. Aldon Smith was a non-factor after his suspension last season, with only two sacks (both against Washington, one of the worst pass-blocking teams in the league) in seven games.
Biggest roster weaknesses for 49ers, Cardinals, Rams, Seahawks - NFL
By Vince Verhei
Arizona Cardinals
Biggest post-draft weakness: Offensive line
This is going to create some controversy. Some observers tabbed Arizona's line as one of the most improved units in the NFL. The Cardinals signed three-time Pro Bowler Mike Iupati away from San Francisco in free agency and then spent their first-round draft choice on Florida's D.J. Humphries.
The numbers see things very, very differently. Our game charters credited Jared Veldheer with one blown block every 46 snaps played in 2014, ranking 15th-best among left tackles and 30th among all tackles. That's not bad, just eminently mediocre. The real issue, though, is Iupati, whose recent performance has not lived up to his reputation. His rate of one blown block per 37 snaps played ranked 32nd out of 37 qualifying left guards (minimum 400 snaps) and 97th out of 108 interior linemen. This wasn't a one-year fluke, either; in 2013, he had virtually the same rate (one every 36.8 snaps). In total, we tabbed Iupati with 20 blown blocks on pass plays last season. Only one interior lineman had more: Ted Larsen, Arizona's left guard last season who will now move over to center.
At the other end of the line, all indications are that Humphries will spend a year on the bench, backing up Bobby Massie, who wasn't terrible last year (42.4 snaps per blown block, 17th among right tackles). Projected right guard Jonathan Cooper was very effective in limited action in 2014 (73.6 snaps per blown block), but he has struggled to stay healthy, with only two starts in his first two seasons.
There is upside here if Iupati can regain his dominant 2012 form, if Cooper can stay healthy, and if Humphries can develop sooner than expected. But that's a lot of "ifs."
San Francisco 49ers
Biggest post-draft weakness: Linebacker
This figured to be one of San Francisco's strengths in 2015, but they were undone by a pair of surprise retirements. Five-time All-Pro Patrick Willis, 30, called it a career in mid-March. Though his 2014 season was limited to six games due to a toe injury, he was still effective when healthy, with some of the best pass coverage numbers of any linebacker in the league. In the end, Willis cited his bad feet as the biggest factor in his decision to retire.
If Willis' retirement was unexpected, Chris Borland's departure a week later was downright stunning. The rookie had 21 defeats (plays that stop an offense on third down, result in a loss of yardage, or force a turnover), ranking in the top 50 in the league, despite playing just 46 percent of the team's defensive snaps. With a full season, he might have challenged J.J. Watt's league-leading total of 43 defeats. It was a tantalizing glimpse of what Borland might have delivered in the future, but he walked away from the game, expressing concerns over possible head trauma. He goes down as one of the best one-year players ever.
So what's left? NaVorro Bowman is a three-time All-Pro and still only 27 years old, but he missed all of last season after tearing his ACL and MCL in the 2013 NFC Championship Game and only recently returned to practice. Michael Wilhoite wasn't much of a factor in his 16 starts; he had fewer run tackles than Borland despite playing more than twice as many snaps. And Nick Moody has barely played since the 49ers took him in the sixth round in 2013.
There are question marks on the outside, too. Ahmad Brooks has been a rock in San Francisco for four years now, but he missed three games last season and just turned 31. Aldon Smith was a non-factor after his suspension last season, with only two sacks (both against Washington, one of the worst pass-blocking teams in the league) in seven games.