That confidence never wavered, with Seider becoming the second player - and first defenseman - in Red Wings history to score his first career goal in overtime on Nov. 6 at Buffalo, joining Mud Bruneteau (Dec. 14, 1935 at Toronto).
"I wasn't looking for something. I wasn't shooting for something. I was just happy to finally get it," Seider said after the Nov. 6 win.
As Seider established himself as one of the NHL's top rookies, he continued etching his name throughout the Red Wings' record books.
From Feb. 9 - March 4, Seider set a franchise record with the longest point streak by a rookie blueliner, collecting 12 points with a plus-6 rating in eight games. It was the fifth time a Red Wings rookie, of any position, recorded an eight-game point streak and the first Detroit defenseman to accomplish the feat since the legendary Nicklas Lidstrom did so twice in 2010-11.
"The highlights are the highlights, but he's done it consistently," Red Wings captain Dylan Larkin said on Feb. 12. "We're really gonna need him to take a step and I think he has it in him."
In the second period of the Red Wings' regular-season finale against the New Jersey Devils on April 29, Seider scored Detroit's second goal to become the fifth rookie blueliner in the last 32 years to record 50 points in an NHL season, joining Quinn Hughes (2019-20), Cale Makar (2019-20), Vladimir Malakhov (1992-93) and Lidstrom (1991-92).
"I think Mo earned a ton of respect around the league, not only from his teammates but from opponents," Sam Gagner said in his end-of-season media session. "Just the way he played, the way he carried himself."