Matsa swam only in the 50 m freestyle at the 2008 Summer Olympics in Beijing. She achieved a FINA B-standard of 25.67 from the Greece National Open Championships in Tripoli. She challenged seven other swimmers in heat nine, including Slovakia's top favorite and five-time Olympian Martina Moravcová. She raced again to seventh place in 25.68, just a slimmest margin off her entry time, and 0.03 of a second behind Ukraine's Oksana Serikova. Matsa failed to advance into the semifinals, as she matched her overall position from Athens in the prelims.