VIDEO: Refs deem Tristan Thompson's stone-cold block a foul

The referees in Game 2 of the Eastern Conference Finals just won't let Tristan Thompson flourish.

The Cleveland Cavaliers center served up a soul-crushing block on Atlanta Hawks shooting guard Kent Bazemore ... only to have it deemed a foul, sending Bazemore to the line.

Here's a closeup of Thompson's heartbreak:

Clean as a whistle if you ask us.