The players the Detroit Red Wings brought in haven't compensated for the players they lost, and that's one reason why the team has regressed.

Veterans Vladimir Tarasenko and Erik Gustafsson, in particular, haven't provided the boost expected in their respective areas - offense and the top six for Tarasenko, the power play and defense for Gustafsson.

A couple of the players they either traded or didn't re-sign are having a significant impact elsewhere. Others, not so much.

Here's a look at how Red Wings who were moved or didn't return after last season are faring:

Robby Fabbri, Anaheim: He has four goals and seven points in 20 games, having missed some time with a knee injury. Fabbri equaled a career-high with 18 goals in 68 games last season but missed a lot of games due to injuries during his 4½ seasons with the Red Wings, who cleared $4 million of cap space by sending him and a conditional fourth-round pick to the Ducks for fringe goalie prospect Gage Alexander.

Shayne Gostisbehere, Carolina: A power-play specialist who drives offense from the back end, he's the player the Red Wings miss the most after signing for three years at a modest $3.2 million average annual value with the Hurricanes. He has six goals, and his 27 points rank seventh among NHL defensemen. Gostisbehere's 29 power-play points last season were the most by a Detroit defenseman since Nicklas Lidstrom in 2010-11 (39).

David Perron, Ottawa: The Red Wings wanted to re-sign this 36-year-old right wing for his production and leadership, but the Senators made a better offer (two years at an AAV of $4 million). It's been a difficult season on and off the ice. He had taken an extended leave of absence earlier due to a medical scare involving his newborn daughter. He hasn't played since Nov. 23. He has no points in nine games after tallying 17 goals and 30 assists last season.

James Reimer, Buffalo: The Red Wings upgraded by signing a starting goaltender in Cam Talbot and letting go Reimer, a backup at this stage of his career. Reimer signed a one-year, $1 million deal with the Sabres, was claimed on waivers by Anaheim, and then reclaimed on waivers by Buffalo. He's a combined 1-4-1 with a 3.04 goals-against average and .888 save percentage.

Daniel Sprong, Seattle: This right wing with a wicked a shot produced 18 goals and 43 points in 76 games during his lone season with the Red Wings, who didn't see him as a fit in their bottom six. He signed for one year at $975,000 with Vancouver and was traded to Seattle a month into the season. He has not made an impact, with just two goals and two assists in 18 games overall.

Jake Walman, San Jose: Trading Walman has backfired on multiple levels. He is tied for 12th among NHL defensemen with 25 points and reached 20 assists faster than any other D-man at the start of his tenure with the Sharks. To shed the final two years of his contract ($3.4 million AAV), the Red Wings needed to acquire a second-round pick from Nashville and include it in the deal. That cost them defense prospect Andrew Gibson. Instead of having Walman fill Gostisbehere's void as the left-shooting power-play point man they wanted, the Red Wings signed Gustafsson for two years at a $2 million AAV and he has no goals and five assists, has been a defensive liability and an occasional healthy scratch.