Loss prevented is a rare match history result shown when the official Riot Games servers are experiencing technical difficulties. Unlike in the case of a regular loss, you won't won't take any negative hits as a result of defeat. Since the loss was most likely out of the players' control, the loss is considered u003cemu003eforgivenu003c/emu003e. However, this will only come in to affect if a large amount of players were affected by the server error or technical difficulty.