Lamar Miller and Daniel Thomas were the Dolphins' primary ball carriers last season, and both remain on the roster. Moreno has a career average of 4.1 yards per carry, compared to 4.2 for Miller and 3.6 for Thomas.
The Dolphins' offensive line has been a big reason for their sputtering ground game. The unit also gave up a franchise-record 58 sacks and was rocked by the team's bullying scandal last year.
Center Mike Pouncey is the lone holdover in the line, and while the Dolphins added left tackle Branden Albert, they're still shopping for upgrades at guard and right tackle.
Denver made Moreno the 12th overall pick in the 2009 draft after he played at Georgia. He has career rushing totals of 3,468 yards and 26 touchdowns.
Moreno became a social media sensation when he cried during the national anthem before a game in December. He has been slowed by injuries and has played in all 16 games just twice in his career.
Rice indicted on more serious assault charge
Baltimore Ravens running back Ray Rice has been indicted on a charge he assaulted his fiancee in an elevator at a casino in Atlantic City, N.J.
Rice had been charged with simple assault after police said he knocked out Janay Palmer on Feb. 15 at the Revel Casino. But a grand jury indicted him Thursday on a more serious count of aggravated assault. It carries a three-to-five-year sentence.
Palmer also had been charged with simple assault. Prosecutors say that complaint was dismissed.
The couple lives in the Baltimore suburb of Reistertown.
Palmer's attorney has said he's certain no crime was committed. Rice's attorney, Michael Diamondstein, says Rice denies the charge and that the couple are happy and in counseling.
The Ravens issued a statement saying "we know there is more to Ray Rice than this one incident."
Police say Colts owner had $29,000 in cash when he was arrested
Indianapolis Colts owner Jim Irsay had $29,000 in cash and bottles of prescription drugs in his vehicle when he was arrested on suspicion of intoxicated driving and other charges, according to the arrest report.
The cash was in Irsay's wallet, metal briefcase and two laundry bags.
The briefcase and bags, which were on the front passenger-side floor, also contained bottles of pills of various colors, including orange, green and white ones, the police report states.
Irsay, 54, denied being drunk when he was arrested in suburban Carmel on March 16, although the billionaire was so disoriented that officers made him sit on the hood of a patrol car to keep him from falling, the report said. The arresting officer said he "believed Irsay to be intoxicated on a substance other than alcohol," according to the report.
The arrest report listed a dozen pieces of evidence identified as prescription drugs, but it didn't specify which drugs they were.