NASHVILLE -- The Nashville Predators have signed defenceman Mattias Ekholm to a six-year, $22.5 million contract.

Predators general manager David Poile announced the deal Monday.

Ekholm, 25, is a restricted free agent who already has a goal and two assists in seven games this season. The 6-foot-4, 215-pound defenceman currently has 30 points and 66 penalty minutes in 152 career games. He doubled his rookie production last season with 18 points and had a plus-12 rating.

The 102nd draft choice overall in 2009, Ekholm made his post-season debut last spring. He played in all six games against Chicago and tied for the team lead with a plus-4 rating while averaging 26 minutes, 24 seconds of ice time.

The deal averages $3.75 million per year for Nashville.