BOSTON (CBS) – While the first day of free agency was dominated by who was leaving Boston, the Bruins eventually made a splash with the early-evening signing of Jarome Iginla.

Lost in the wild signing frenzy was Peter Chiarelli inking four depth players shortly after signing the veteran forward who spurned Boston just three months ago.

In addition to Iginla, Chiarelli and the Bruins signed goaltender Chad Johnson to a one-year, one-way contract, forward Bobby Robins to a two-year, two-way contract, forward Nick Johnson to a one-year, two-way deal and defenseman Mike Moore to a two-way, one-year contract.

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The 27-year-old Johnson, who ’s salary is worth an annual cap figure of $600,000, posted a 2-0-2 record with a 1.21 goals against average and a .954 save percentage with one shutout. The goaltender appeared in a total of 170 American Hockey League games from 2009-13 with the Hartford Wolfpack, Connecticut Whale and Portland Pirates, compiling a 74-70-12 record.

Boston lost their backup netminder, Anton Khudobin, to the Carolina Hurricanes on Friday, and Johnson will likely compete with Niklas Svedberg for that role for the 2013-14 season.

Robins, who has appeared in 107 games for the Providence Bruins over the last two seasons, gets a salary worth $600,000 at the NHL level and $100,000 at the AHL level. He is known as the P-Bruins’ enforcer, racking up a career-high 316 penalty minutes last season — which led the AHL. The 31-year-old has skated in 212 AHL games in his career, recording 17 goals and 28 assists while accruing 610 penalty minutes.

The 31-year-old Robins played college hockey at UMass-Lowell.

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Nick Johnson skated in 17 games in 2013 for the Phoenix Coyotes, recording four goals and two assists for six points with a plus-three rating. The 27-year-old forward played in 10 games for Pittsburgh from 2009-11 and 77 games for Minnesota in 2011-12. In total, the winger has accrued 14 goals and 23 assists for 37 points in 104 NHL games.

Johnson’s contract is worth $600,000 at the NHL level and $200,000 at the AHL level.

Moore joins the Bruins organization after spending the previous year in the Predators system, playing in 50 games for Milwaukee Admirals. The 28-year-old notched five goals and 11 assists for 16 points with Milwaukee, while accumulating 42 penalty minutes. Prior to Nashville, Moore spent four seasons in the San Jose organization, skating in 253 games for the Worcester Sharks from 2007-12, tallying 14 goals and 58 assists while racking up 365 penalty minutes.

The blueliner’s contract is worth $550,000 at the NHL level and $150,000 at the AHL level.