Klaudijus Upstas is a 31-year-old professional football player from LTU. He currently plays for FK Zalgiris Vilnius, wearing the number 13 shirt. At the international level, he represents Lithuania. He plays primarily as a Defender. He stands at 178cm tall and weighs 83kg. His preferred foot is Both. His current market value is estimated at 400K €.

His most recent move was a from Hegelmann Litauen to FK Zalgiris Vilnius on 2025-12-31.

Throughout the Lithuanian A Lyga 2026, Klaudijus Upstas featured in 2 matches, averaging 0 tackles, 0 interceptions, and 0 clearances per game, while blocking 0 shots per game.