There is, in effect, an eighth round of the draft where teams compete for the best players that didn't hear their names called over the weekend.
Last year, several "after-thoughts" made a mark as rookies. Doug Baldwin led the Seahawks with 51 catches for 788 yards and four scores. Byron Bell started 12 games at tackle for the Panthers because of an injury to Jeff Otah. The Colts found a valuable contributor in safety Joe Lefeged (31 tackles, two INT, 578 kick return yards). New Cowboys kicker Dan Bailey tied for fifth in the league in scoring after nailing 32 field goals.
The following prospects received a call after the draft (or more likely during, when teams thought they might be available Saturday night) because their new team couldn't address a need position over the three-day event.
Look for a few to overcome their anonymity, a medical concern or other issue to not only make a team -- but also make a difference.
Baltimore Ravens: James Carmon, OT, Mississippi State -- Carmon was originally brought to Starkville to play defensive tackle, and was compared to new teammate Terrence Cody because of his size (6-foot-5 ½, 330 pounds) and junior college background. The Ravens will continue his education as an offensive tackle with the hopes he flourishes.
Cincinnati Bengals: Vontaze Burfict, ILB, Arizona State -- Wherever Burfict signed, he would have been one of the most interesting UDFA acquisitions. If Burfict can stay in shape (and out of trouble) to maximize his talent, he'll make an impact on special teams and attempt to become a thumper in the middle of the defense.
Green Bay Packers: Dale Moss, WR, South Dakota State -- Moss only made the switch from basketball to football for the Jackrabbits in his senior season. His size (6-3, 213) and athleticism (41-inch vertical) give him enough upside to land on the practice squad in 2012, or maybe as the last receiver on the 53-man if he shows enough in training camp.
Jacksonville Jaguars: Mike Brewster, C, Ohio State -- The Florida native was disappointed to go undrafted after starting 49 straight games for the Buckeyes, but he'll eventually get his chance to take over for veteran Brad Meester.
Minnesota Vikings: Quentin Saulsberry, OG/C, Mississippi State -- The versatile Saulsberry started at right tackle, both guard spots, and at center for the Bulldogs. The Vikings could use his mobility and toughness up front, so he'll be a valuable swing lineman as a rookie and challenge for playing time in the future.
New England Patriots: Markus Zusevics, G, Iowa -- The Patriots signed Robert Gallery this year, but brought on Zusevics as a longer-term answer at guard because of his toughness. He went undrafted due to a pectoral injury suffered at the NFL Scouting Combine, so if he can spend a year on the physically unable to perform or injured reserve lists he might become a heavy contributor in 2013.
New York Giants: Janzen Jackson, CB/S, McNeese State -- Despite his off-field issues and transfer from Tennessee, Jackson's agility and playmaking ability make him an intriguing defensive back prospect.
San Francisco 49ers: Matt Masifilo, DE, Stanford -- The team did not address its five-technique defensive end spot in the draft, so they signed four free agents to see who will stick. The Cardinal's honorable mention All-Pac 12 player has good length (34-inch arms) and strength (38 reps) to be a force on the edge.
St. Louis Rams: Alex Hoffman-Ellis, OLB, Washington State -- A fair number of undrafted players could make the team this year, as new general manager Les Snead tries to turn over the roster. Look for Hoffman-Ellis to push for a starting job because of his strong tackling and instincts -- as well as the team's lack of bodies at the position.
Tennessee Titans: William Vlachos, C, Alabama -- Alabama's stalwart pivot man fits an immediate need because of the age of veteran starting center Eugene Amato. Though not quite 6-1 and only an average athlete, Vlachos' strength and tenaciousness inside give him a chance to succeed. Another player to watch is USC DT DaJohn Harris, who dropped out of the draft due to a heart abnormality but has the clearance from doctors to play.
Washington Redskins: Chase Minnifield, CB, Virginia -- The team picked up two secondary prospects late in the draft, but the son of former NFL Pro Bowl corner Frank Minnifield is going to have a chip on his shoulder after going undrafted. His slight build and slow 40 time didn't impress scouts, but when healthy he didn't back down from challenges.