One And Done

BROWNS
A Jamal Lewis fan would explain the running back's decline in Baltimore by pointing out that he lacked a fullback and split carries with Chester Taylor for two years. Here Lewis won't have to share the rock much, and he'll get blocking from the talented Lawrence Vickers. Even if Lewis struggles, he won't likely lose many touches to fourth-year back Jason Wright, who hasn't made much of his limited opportunities.

Projected split: LEWIS, 80%; WRIGHT, 10%; VICKERS, 10%

DOLPHINS
Cam Cameron was never one to spread carries around when he was in San Diego, where he served as offensive coordinator from 2002 to '06. In Miami, the rookie coach will ask Ronnie Brown (left) to fill the LaDainian Tomlinson role, which should result in 400 carries and 40 receptions for the third-year back. Cameron will deploy small-but-quick rookie Lorenzo Booker, a third-round pick from Florida State, in a relief role, much as he used Michael Turner while he was with the Chargers.

Projected split: BROWN, 80%; BOOKER, 20%

BENGALS
Since Corey Dillon left Cincinnati three years ago, Rudi Johnson (left) has been the man, getting 87% of the RB carries. The Bengals had hoped to mix it up more this year after finishing 26th in rushing in 2006, but a preseason ACL injury to second-round pick Kenny Irons has complicated those plans. Veteran Kenny Watson will still get third-down work, while practice-squadder Quincy Wilson now seems the likely option for the third slot.

Projected split: JOHNSON, 75%; OTHERS, 25%

RAMS
Steven Jackson proved last year that he's a genuine workhorse, carrying the ball 346 times, catching 90 passes, scoring 16 TDs and missing only part of one game. This year coach Scott Linehan will ask Jackson to shoulder much the same load; expect Brian Leonard, a second-round pick out of Rutgers, to be used primarily as a blocker and pass catcher in two-back sets, spelling Jackson only on rare occasions.

Projected split: JACKSON, 90%; LEONARD, 10%

Splitting Headaches

Be smart and steer clear of these highly problematic rotations