。
Ahead of the match, an opening ceremony was held at Yoyogi Stadium.
Literal
Match [to-に] preceding-[さきだち] Yoyogi Stadium [at-で] opening-ceremony [subject-が] was-held.
Sports news reporting. ~にさきだち ('preceding, prior to, ahead of') is a formal pattern used in written/journalistic prose — literally 'with X as the thing preceded,' using the classical verb さきだつ ('go ahead of'). ~が行われる ('is held, is conducted') is the standard passive for events. 代々木競技場 (Yoyogi National Gymnasium) is a famous Tokyo venue built for the 1964 Olympics, designed by Kenzō Tange.