| New York Life Protection Index Analysis |
| San Francisco 49ers |
| Season | Rank | Protection Index | Previous Protection Index | Change | Offensive Linemen Drafted |
| 2010 | 27 | 45.9 | 52.8 | -6.9 | Anthony Davis (T) - Rutgers, Mike Iupati (G) - Idaho |
| 2009 | 23 | 52.8 | 42.6 | 10.2 | |
| 2008 | 32 | 42.6 | 40.5 | 2.1 | Chilo Rachal (G) - USC |
| 2007 | 31 | 40.5 | 42.6 | -2.1 | Joe Staley (T) - Central Michigan |
| 2006 | 27 | 42.6 | 11.9 | 30.7 | |
| 2005 | 32 | 11.9 | 44.6 | -32.7 | David Baas (G) - Michigan, Adam Snyder (T) - Oregon, Patrick Estes (T) - Virginia |
| 2004 | 26 | 44.6 | 49.7 | -5.1 | Justin Smiley (G) - Alabama |
| 2003 | 19t | 49.7 | 56.7 | -7.0 | Kwame Harris (T) - Stanford |
| 2002 | 17 | 56.7 | 55.9 | 0.8 | Eric Heitmann (C) - Stanford, Kyle Kosier (G) - Arizona State |
| 2001 | 13 | 55.9 | 55.6 | 0.3 | |
| 2000 | 10t | 55.6 | 49.5 | 6.1 | |
| 1999 | 18 | 49.5 | 46.9 | 2.6 | Tyrone Hopson (G) - Eastern Kentucky |
| 1998 | 18 | 46.9 | 37.1 | 9.8 | Chris Ruhman (T) - Texas A&M |
| 1997 | 26 | 37.1 | 51.7 | -14.6 | |
| 1996 | 17 | 51.7 | 64.0 | -12.3 | |
| 1995 | 12 | 64.0 | 57.8 | 6.2 | |
| 1994 | 15 | 57.8 | 62.5 | -4.7 | |
| 1993 | 9 | 62.5 | N/A | N/A | Chris Dalman (C) - Stanford |