C. Sergey's team ... 1) won the match for the first place. 2) won three matches. 3) won the match for the third place. 4) took part in two matches.

В тексте сказано: «We played three matches in total. ... In the last match we played for the third place. We fought hard, and we won!» Следовательно, команда Сергея выиграла матч за третье место, но не заняла первое место и не выиграла все три матча.

Ответ: 3) won the match for the third place.