Most pro games played per class in Hearthstone

Most pro games played per class in Hearthstone
Who
"ThijsNL"
What
188 total number
Where
Netherlands
When
24 February 2017

As of 24 February 2017, the class played most by a single player in Hearthstone is the Warlock, achieved by "ThijsNL" (Netherlands), who had played 188 competitive matches using this class according to GosuGamers.