Laich, who had played in all 25 games for the Capitals this season, has four goals and two assists. He scored in the Capitals' 6-4 loss to the Ottawa Senators on Wednesday.
"He had a little tightness the other day [and] he played," coach Adam Oates said. "He felt pretty good [Thursday] morning, and then last night, it was just a little tight. Hopefully, just precautionary and nothing major there."
I have been blessed to play for 16 years in the NHL; it has been an amazing ride. I would like to thank the Tampa Bay Lightning and New York Rangers organizations and owners for providing me the opportunity to play the sport I love for so many years. I could have never played for so long or accomplished all that I have without the unwavering love and support from my wife, Heather, our three sons, Ryan, Lucas, and Mason, and my parents.
— Martin St. Louis after announcing his retirement from the NHL on Thursday