The Washington Capitals have acquired defenseman Kevin Shattenkirk and goaltender Pheonix Copley from the St. Louis Blues in exchange for left wing Zach Sanford, center Brad Malone, a 2017 first-round draft pick and a 2019 conditional second-round draft pick.
The Blues have also retained 39 percent of Shattenkirk's salary.
Shattenkirk, 28, has registered 11 goals and 31 assists for 42 points in 61 games with the Blues this season.
In 471 career NHL regular-season games, to date, with the Colorado Avalanche and Blues, Shattenkirk has accumulated 66 goals and 218 assists for 284 points and 294 penalty minutes.
He was originally drafted 14th overall by the Avalanche in the 2007 NHL Entry Draft.
Sanford, 22, tallied two goals, one assist and six penalty minutes in 26 games with the Capitals this season. He also picked up 11 goals and five assists for 16 points in 25 games with the AHL's Hersey Bears.
He was originally drafted by the Capitals in the second-round (61st overall) of the 2013 NHL Entry Draft.
Malone, 27, has dressed in 52 games for the Bears this season, tallying 20 points (seven goals, 13 assists) and 66 penalty minutes.
He has appeared in 176 career NHL games, including stints with Carolina and Colorado, recording 30 points (13 goals, 17 assists) and 188 penalty minutes.
The trade was first reported by St. Louis Post-Dispatch reporter Jeremy Rutherford.