 He returned to North America having scored 20 points in just 15 games for the German club.In the 2013–14, Stewart was named First Star of the Week on December 23, 2013, for his performance in the week ending December 22, after earning six goals and one assist.The Blues traded Stewart on February 28, 2014, along with Jaroslav Halák, William Carrier, a first-round draft pick in 2015, and a conditional draft pick in 2016, to the Buffalo Sabres in exchange for Ryan Miller and Steve Ott.