Moving quickly to bolster a tailback position severely weakened by the season-ending knee injury suffered on Sunday by star Deuce McAllister, the New Orleans Saints acquired Jesse Chatman in a trade with the Miami Dolphins, ESPN.com has learned. The Dolphins will receive a conditional seventh-round pick in the 2006 draft. The acquisition of Chatman, a four-year veteran who spent the first three seasons of his career with the San Diego Chargers, came as the Saints were reeling from the loss of their running game workhorse and the offensive centerpiece. New Orleans spoke with several teams on Monday about potential deals, with some of those talks initiated by the other franchises, as the Saints sought a replacement running back.