Blizzard's popular Overwatch finally got the competitive mode last week, but it hasn't arrived completely problem free. Actually, many players have been wrongfully punished for losing connection. The idea is that everything should be fine as long as you re-connect and enter back into the game, but players have experienced punishment none the less. Even in instances where the returning player have won, the game still sees it as a loss to punish the player for leaving. Blizzard's Jeff Kaplan has made the following comment on the dev's forum:
"We have some fixes coming (hopefully) next week."
For now, make sure you stay connected.
Thanks, Gamespot.