Education
Grzelcyk attended the Belmont Hill School before joining the USNTDP of the USHL, winning a gold medal at the 2012 U18 World Juniors in the Czechoslovakian Republic.
Grzelcyk attended the Belmont Hill School before joining the USNTDP of the USHL, winning a gold medal at the 2012 U18 World Juniors in the Czechoslovakian Republic.
He was selected by the Boston Bruins with the 85th overall pick in the 3rd round of the 2012 National Hockey League Entry Draft. He committed to and currently plays for Boston University in the Hockey East Conference of the National Collegiate Athletic Association. He was named to the Hockey East All-Freshman team in 2012. He was selected to the preliminary roster for the 2013 World Juniors but did not make the final cut.
He is currently a senior, and captain of the Terriers.
He was named an assistant captain at the 2014 World Juniors but the United States did not medal. He scored the overtime winning goal in the 63rd Beanpot that gave BU their 30th title, and was named the tournament Most Valuable Player.