Overall, Saad has posted 184 goals and 187 assists (371 points) and a plus-52 rating in 632 career NHL regular-season games. He won two Stanley Cups as a member of the Blackhawks (2013, 2015) and appeared in the 2016 NHL All-Star Game.
Saad said one of the biggest reasons he decided to join the Blues was for the opportunity to win again.
"I've won in my career, I've been fortunate," he said. "And once you get a taste of it, there's no better feeling. When it comes down to it, I want to go somewhere where I have another chance of winning. I want to have a successful team and the Blues fit that mold.
"From playing against them, they play a heavy game, they like to hold onto pucks, cycle pucks, protect it, and that's all part of my identity as well," Saad added. "I think I can fit right into that aspect, as well as playing a 200-foot game… I think all the ingredients are there. I think it's a team that definitely excites me, so I'm happy to be a part of it."