On the first day of the NHL free-agent market, the Rangers filled holes on their depth chart Wednesday, adding defenseman Raphael Diaz for his second stint as a Blueshirt and Swedish left wing Viktor Stalberg, whom the Predators had bought out.

Each received a one-year deal. Diaz, 29, who becomes a leading candidate for the role of seventh defenseman, will receive $700,000. Stalberg, also 29, signed for $1.1 million.

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Diaz was 2-2-4 in 56 games for Calgary last season. He was 1-1-2 in 11 games for the Rangers in 2013-14. Stralberg was 2-8-10 in 25 games for Nashville and 1-3-4 in six playoff games. He was a Blackhawk for 21/2 seasons, scoring 43 goals and 90 points.

The Rangers signed free-agent forwards Matt Lindblad (Providence Bruins), Jayson Magna (Pittsburgh) and Brian Gibbons (Columbus), and 6-6 goalie Marcus Hellberg was acquired from the Predators for a sixth-round draft pick in 2017. They are ticketed for the AHL Hartford Wolf Pack.

The Rangers also announced that center Derick Brassard had surgery last week to repair a tendon in his hand. Recovery is estimated at 4-6 weeks, so he is expected to be ready for training camp.