Otis, 25, was signed by the Raiders last offseason as an undrafted free agent out of Columbia. He was released near the end of training camp and did not appear in any of Oakland's four exhibition games.
Meyer, 25, spent time in camp with the Cincinnati Bengals and Seattle Seahawks the past two seasons. Before that, he was drafted by the Cincinnati Reds in 2001 and the Giants in 2004 and '05 as a pitcher.
In other news, the Raiders re-signed linebacker Jon Alston. He was an exclusive rights free agent who the Raiders liked enough to bring back as a special teams player and situational player on defense.
Pacman update: After their initial trade offer of a seventh-round draft pick for Tennessee Titans cornerback Adam "Pacman" Jones was declined, the Dallas Cowboys have added a player to their proposal, according to a report on SI.com, ESPN.com reported. The Titans are considering the deal but need to address some financial issues before they accept the offer, according to the report. Jones has two years left on his original five-year, $30 million contract, and the Cowboys want to redo the deal, likely to one year.
Seahawks: Seattle signed former Pro Bowl kicker Olindo Mare to a two-year deal to replace departed free agent Josh Brown.
Patriots: New England tight end Benjamin Watson underwent surgery on his left ankle within the past few weeks, surgery that revealed both cartilage damage and scar tissue, according to several sources familiar with the situation.
Packers: Long snapper Rob Davis retired, weeks after becoming the only player remaining from the team's most recent Super Bowl appearance in 1998.