The 28-year-old defenseman, who can become an unrestricted free agent July 1, will play for his third team this season; he was traded to the Ducks by the Vancouver Canucks on Jan. 17 for defenseman Luke Schenn and a seventh-round pick in the 2020 NHL Draft. Del Zotto had three assists in 12 games for Anaheim and four points (one goal, three assists) in 23 games with Vancouver.
RELATED: [2018-19 Trade Tracker]
Selected by the New York Rangers with the No. 20 pick in the 2008 NHL Draft, Del Zotto has 218 points (54 goals, 164 assists) in 601 NHL games with the Ducks, Canucks, Rangers, Nashville Predators and Philadelphia Flyers.
"Michael is a left-shot defenseman, he's got a lot of experience, he was a former first-round pick by the New York Rangers," Blues general manager Doug Armstrong said. "Entering the playoffs, you want to have a number of healthy defenseman. ... I think just gives us a little added layer that we didn't have yesterday."
The Blues, who trail the Nashville Predators by five points for second place in the Central Division, play the Predators at Enterprise Center on Tuesday (8 p.m. ET; FS-MW, FS-TN, NHL.TV).