He currently plays for Polonia Bytom, wearing the number 30 shirt. He plays primarily as a Defender. He stands at 186cm tall and weighs 86kg. His preferred foot is Right. His current market value is estimated at 250K .

His most recent move was a from Pogon Siedlce to Polonia Bytom on 2025-01-23.

Throughout the Poland Liga 1 2025-2026, Oskar Krzyzak featured in 23 matches, averaging 0 tackles, 0 interceptions, and 0 clearances per game, while blocking 0 shots per game.