Who was the first sprinter in a relay race?

The question of who was the first sprinter in a relay race depends on the specific relay event being referenced. In a standard 4x100m relay race, the first sprinter is known as the lead-off runner. This runner typically starts in the blocks and carries a baton for the first leg of the race. The lead-off runner's primary responsibility is to accelerate quickly, establish a strong position for the team, and execute a clean baton exchange to the next runner.