Jamal Anderson 1998 - 410 carries, 1846 rushing yards
Jamal Anderson 1999 - 19 carries, 59 yards
Jamal Anderson 2000 - 282 carries, 1024 yards
Jamal Anderson 2001 - 55 carries, 190 yards (last season in NFL)
Gerald Riggs 1985 - 397 carries, 1719 yards
Gerald Riggs 1986 - 343 carries, 1327 yards
Gerald Riggs 1987 - 203 carries, 875 yards
Gerald Riggs 1988 through 1991 (last season in NFL) - averaged about 100 carries, 500 yards per season
James Wilder 1984 - 407 carries, 1544 yards
James Wilder 1985 - 365 carries, 1300 yards
James Wilder 1986 - 190 carries, 704 yards
James Wilder 1987 through 1990 (last season in NFL) - averaged about 70 carries, 200 yards per season
Ricky Williams 2002 - 383 carries, 1853 yards
Ricky Williams 2003 - 392 carries, 1372 yards
Ricky Williams 2004 - 168 carries, 743 yards
Ricky Williams 2005 through present - *inhales and holds*
Terrell Davis 1998 - 392 carries, 2008 yards
Terrell Davis 1999 - 67 carries, 211 yards
Terrell Davis 2000 - 78 carries, 282 yards
Terrell Davis 2001 (last season in NFL) - 167 carries, 701 yards
Barry Foster 1992 - 390 carries, 1690 yards
Barry Foster 1993 - 177 carries, 711 yards
Barry Foster 1994 - 216 carries, 851 yards
Barry Foster 1995 - sitting in his living room
Christian Okoye 1989 - 370 carries, 1480 yards
Christian Okoye 1990 - 245 carries, 805 yards
Christian Okoye 1991 - 225 carries, 1031 yards
Christian Okoye 1992 - 144 carries, 448 yards
Christian Okoye 1993 - sitting in his living room
Herschel Walker 1988 - 361 carries, 1514 yards
Herschel Walker 1989 - 250 carries, 917 yards
Herschel Walker 1990 - 184 carries, 770 yards
Herschel Walker 1991 through 1997 - 1x 1070 yard season, 6x seasons < 850 yards
Marcus Allen 1985 - 380 carries, 1759 yards
Marcus Allen 1986 - 308 carries, 759 yards
Marcus Allen 1987 through 1997 - never broke 900 yards in a season
Earl Campbell 1980 - 373 carries, 1934 yards
Earl Campbell 1981 - 361 carries, 1376 yards
Earl Campbell 1982 - on his way out the door (had one more good season with Houston in 1983)
LJ 2005 - 416 carries, 1789 yards
LJ 2006 - 158 carries, 559 yards
LJ 2007 and beyond - ???
I see LJ as being similar to Jamal Lewis, Eddie George or George Rogers in how their careers went (and in LJ's case, will go). They have a season that crushes them, carries-wise, and then they play for several more seasons at noticeably reduced production. Still solid, but nowhere near "top of their game" production.