The Facts: Bob Condotta of The Seattle Times wrote Monday that coach Pete Carroll sounded "amazed" with the recently signed running back's ability to pick up the playbook. "He ran the whole offense today," Carroll said of Jackson, per the newspaper. "I don't know how he got it all done, but he got it done in a day."

Diehards Line:Carroll noted that Jackson would "play a lot" in Sunday's regular-season opener against the St. Louis Rams, saying: "He's going to give us some real secure play right now coming out of the backfield and doing some things for us that we need some help on." As Marshawn Lynch's primary backup, Jackson is set to catch balls and pass-block on third down, according to Carroll. After releasing Robert Turbin, the team viewed the 34-year-old Jackson as a better option for that role than the traded-away Christine Michael.