Runner No. 2 on a Relay Race

Puzzle 1 of Teamwork Pack

Question is: Runner No. 2 on a Relay Race

and the answer is: SECONDLEG

Word Meaning:

SECOND LEG — (sports, soccer) The second of the two matches or “legs” which are played between two teams in a two-legged tie. The winning team is usually determined by aggregate.

Definitions from Wiktionary.