Galchenyuk played his final year of minor hockey with the U16 Chicago Young Americans and quickly became a star player, tallying 44 goals and 43 assists, leading coach Bruno Bragagnolo to refer to winning a lottery ticket as "the odds of having another kid like Alex play for you".
His performance led to him being drafted number one in the 2010 OHL Priority Selection Draft by the Sarnia Sting.

Galchenyuk was also selected 25th overall in the 2011 KHL Junior Draft by Atlant Moscow Oblast, which caused his father, Alexander Galchenyuk, to express his displeasure in Alex not being drafted in the first round by the KHL's Belarusian team, Dinamo Minsk.

In his first season with the Sting, Galchenyuk recorded 31 goals and 52 assists for 83 total points, which led to him being selected to the OHL 1st All-Rookie team alongside teammate Nail Yakupov.
The following year, he missed all but two regular-season games and six playoff games with a knee injury.
He was selected third in the 2012 NHL Entry Draft by the Montreal Canadiens.

On July 23, 2012, Galchenyuk signed a three-year, entry-level contract with the Canadiens.
During the 2012–13 NHL lockout, he played for Sarnia in the OHL, where he served as captain of the team during his final season for the Sting and where he dominated by recording 27 goals and 34 assists in 33 games.
Galchenyuk played his final year of minor hockey with the U16 Chicago Young Americans and quickly became a star player, tallying 44 goals and 43 assists, leading coach Bruno Bragagnolo to refer to winning a lottery ticket as "the odds of having another kid like Alex play for you". His performance led to him being drafted number one in the 2010 OHL Priority Selection Draft by the Sarnia Sting.
Galchenyuk was also selected 25th overall in the 2011 KHL Junior Draft by Atlant Moscow Oblast, which caused his father, Alexander Galchenyuk, to express his displeasure in Alex not being drafted in the first round by the KHL's Belarusian team, Dinamo Minsk.
In his first season with the Sting, Galchenyuk recorded 31 goals and 52 assists for 83 total points, which led to him being selected to the OHL 1st All-Rookie team alongside teammate Nail Yakupov. The following year, he missed all but two regular-season games and six playoff games with a knee injury. He was selected third in the 2012 NHL Entry Draft by the Montreal Canadiens.
On July 23, 2012, Galchenyuk signed a three-year, entry-level contract with the Canadiens. During the 2012–13 NHL lockout, he played for Sarnia in the OHL, where he served as captain of the team during his final season for the Sting and where he dominated by recording 27 goals and 34 assists in 33 games.
Alex Galchenyuk