The Atlanta Braves targeted Pike as their player to be named later in the deal that sent Robert Whalen and Max Povse to Seattle for Alex Jackson.
The Mariners drafted Pike in the 3rd round of the 2012 draft out of high school in Florida. They started him in their Arizona Rookie League team, where he threw 50 2/3 innings, posting a 1.78 ERA, 1.09 WHIP, and a 21/57 BB/K ratio.
The Mariners sent Pike to their low-A team in the Midwest League in 2013, and he showed well as a 19 year old, making 22 starts, throwing 110 1/3 innings with a 2.