He was just a draft pick -- albeit a very high draft pick -- who had fought through "The Program" at Boston Bruins Development Camp, and would eventually attend B's rookie and training camp in the hopes of donning the Black & Gold and avoiding a trip back to juniors.
A year removed from those uncertainties, Seguin, a Stanley Cup champion, enjoyed his day with hockey's Holy Grail.
"I think you really want to share it with all the people...doing appearances at rinks and seeing kids," said Seguin, who appeared publically numerous times in and around Boston on behalf of the B's last season. And like his fellow Ontario natives on the Bruins roster, Tyler made sure to share the Cup with as many people as possible.
"I mean it is my first time, so I want to take it a lot of places," explained Seguin. "And you know, when you win the Cup you want to share it with your hometown and many of the fans around.
"It's pretty crazy the amount of support we get, even on the street in Brampton...so I want to share it with all of them."
But like many of the Bruins, a trip to see some extra special kids was first for Tyler.
"We're going to first start at [the Hospital for Sick Children] in downtown Toronto," said Seguin. "Then after that we want to take it to the City of Brampton, and just go downtown there and see if there are some local fans that want to come out.
"I'm not sure how many people are going to show up."
The B's forward's hometown paper, the Brampton Guardian, reported that over a thousand people showed up at Chinguacousy Park to get their picture taken with Stanley and Seguin.
Tyler also left with a set of keys to the City of Brampton.
"We are very proud of Tyler's achievements and congratulate him on his championship season, " said Brampton Mayor Susan Fennell in a statement. "As one of the youngest players ever to win the Stanley Cup, Tyler joins the long list of great athletes that come from the City of Brampton."
Seguin then made another stop to see some kids a spot where he and a lot of local athletes got their start -- Westwood Arena.
"I used to play hockey [there]," said Seguin. "It's going to be different, I'm really excited to see how the kids react when they see the Stanley Cup and hopefully it makes a lot of their days."
Judging by the numbers in Brampton's park and Etobicoke's rink Seguin achieved that first goal, but the second order of business was to take the Cup to a secluded spot to celebrate.
"After that it's going to be a family and friends event," said Seguin of the pig roast being thrown in a family friend's backyard. "It's going to be a great day.
"Hopefully it all works out."
It all worked out, just like Seguin's first NHL season.
"Yeah, I think you can definitely relax a little more," said Seguin, who admitted to some nerves throughout his freshman campaign. "I've been fortunate enough and lucky enough to win the Cup my first year, I know what it takes to get there and I want to do it again."