The Skirmish at Yin was a space battle at Yin in 100 ABY. Having been forced to withdraw from Quadia a month before, the Tetrarchy of Mezlagob sent another investigatory force, this time supplemented by six battleships. Aware during the same period of the Tetrarchy's presence and the probability of a second attack, Queen Rin Sakaros deployed her fleet across the border systems of the Romasi sector. Yin was defended by a battle group of eight ships led by the Imperial Star Destroyer Overlord.