David Katz showed zero emotion as he played in a tense tournament against other professional gamers prior to Sunday’s mass shooting inside a Florida mall. The 24yearold was an elite player of the video game "Madden NFL 19" and was known by the tag name “Bread.” He wore the same blank expression whether he won or whether he lost. Katz cracked Sunday after losing a tournament in Jacksonville, Florida, killing two gamers and wounding 11 others before turning the gun on himself. #InsideEdition