To get a good sense of which guys will make the HOF, I think looking at guys who aren't in is a good start. To me, Ricky Watters and Corey Dillon are good benchmarks. Good, not great RBs who were very consistent, yet clearly were never the best in any year they played.10643 rush yards 14891 combined yards RB78 rushing TDs91 combined TDsFive Pro BowlsOne Super Bowl RingCorey Dillon:11241 rush yards13154 combined yards82 rushing TDs89 total TDsFour Pro BowlsOne Super Bowl RingFrom these two, the benchmark looks to be about 12,000 rush yards, 15,000 combined yards, and about 90 TDs. If a player falls short of these stats AND doesn't have some other exceptional merit, then I don't see them getting in. Of the guys not in:LT2 absolute lock. Bettis, retired as number five (I think) all time in rush yards, 90 TDs. Never led the league in any important category. Should get in by virtue of being top five rusher when retired and still at number 6. Edge: Retired in or near top ten in rushing yards (currently at 11) 91 total TDs, led the league in rushing twice. Bubble, but should get in or will be the new benchmark.Fred Taylor: Retired in top 15 (as did Watters), never led the league in a major category, 74 total TDs. Only one pro bowl. Will not get in unless HOF wants a JAX player.Warrick Dunn: Similar career yardage stats to Watters, but much fewer TDs. Not getting in.Guys with 10,000 career rush yards, but fewer than Watters:Jamaal Lewis. One huge year and several good years not enough.Thomas Jones. Several good years, never led the league in a category and falls way short in TD department. Not getting inTiki Barber. Might get in based on great end of career with three straight seasons of over 2000 combined yards. Poor TD production and bad image means I don't think he will. NY wins SB the year AFTER he retires is a pretty ugly mark.Eddie George: Never led the league. Solid, workhorse type that needed another year or two to accumulate the stats.Otis Anderson. I remember him as a productive but unspectacular player. He retired at about number 8 and was the benchmark for awhile that 10k just wasn't enough.Ricky Williams. Would have had the career stats, but as it is, not good enough unless he gets some ridiculous resurgence.Other notables:Shaun Alexander. Not popular with fans as many saw him as soft. One unbelievable year with several very strong years. 112 total TDs (7th all time for RBs), more than anyone else mentioned might be enough to offset relatively low career rushing totals. Steven Jackson. Needs to get there on career stats. Only one league leading stat (combined yardage in 2006) no all-pro selections, and very paltry TD production in comparison to others with his total yardage. I don't think he will make it, though he might get some votes for being a great player on a string of bad teams. The story isn't over for him though and he could have another couple of years to get enough in the accumulated stats to get in. MJD. Leading the league in rushing last year bolstered his credentials considerably. Only 26, he needs to average just over 1000 yds and 10 TDs for the next three years to join the conversation for a bubble player or two years as a league leader. If he outpaces that kind of production, should get in fairly easily.Peterson. Needs similar production to MJD for bubble status on stats alone. But might get an edge as his overall talent for his first four years in the league was tremendous. Still, needs to overcome a major injury to get back into the conversation.Frank Gore. Just not enough yardage on wheels that look to be slowing. His TD total, like SJax, is going to be a potential hurdle if he doesn't hang around as a productive back for another 3-4 years, which looks kind of doubtful at this point. Everyone else is way too early to call. A couple of good years from guys just isn't enough. Rice, McCoy, Foster, all have a shot, but the NFL is cruel to RBs. I think you want to be at 4000 rushing yards by the age of 24, leaving an average of 1200 until the age of 29 to get to 10,000 to have a good chance. Here's a quick rundown of guys that might get their way into the conversation, based on yards per year needed to reach 10,000 at 29:Rice, 24: 1120McCoy, 23: 1166Mendenhall, 24: 1300JStew, 24: 1300Lynch, 25: 1375Foster, 25: 1475Chris Johnson, 26: 1450