the first point scored or advantage gained in a contest
Example:
- Rodriguez helped Albion draw first blood with his first goal for the team.
- First blood went to Gauff as she won eight straight points.
the first time that somebody is injured and loses blood in a contest that involves fighting
Example:
- Crespo drew first blood, cutting Green between the eyes in the second round.
- They were standing not far from where the first blood was shed in the fight for independence.