pacesetter
🇺🇸
/ˈpeɪssetər/
🇬🇧
/ˈpeɪssetə(r)/
a person or animal that starts a race quickly to set the speed for others.
The pacesetter started strong, leading the pack from the beginning.
a person or team that is leading a sports competition.
The team has been the pacesetter all season, dominating every match.