"Frank Gore has rushed for 6,414 yards in his 49ers career, and he has scored 44 touchdowns. But the number he most wants to change is 2.9.

That's the number, in millions, that Gore is due in base pay (he could get an additional $2 million should he stay healthy the entire season).

What Gore wants is a contract extension on par with the five-year, $43 million deal with $21 million in guarantees that the Panthers just gave running back DeAngelo Williams.

Gore, 28, is a month younger than Williams and has missed nine games in the past three years to Williams' 13. Gore also has 530 more career carries than Williams.

While many contend Gore is the team's best offensive player, tight end Vernon Davis signed a six-year deal last year worth more than $42 million, with $23 million in guaranteed money. Davis is also younger and plays a less demanding position. So what should a fair deal for Gore look like?"