Definition from Wiktionary, the free dictionary
- (sports, idiomatic) A substitute who has yet to play in the match, and therefore has more energy than those already on the field.
- The tired France were unable to break down the German defence, so they brought on some fresh legs.
2011 January 11, Jonathan Stevenson, “West Ham 2 - 1 Birmingham”, BBC:
- But they survived some real pressure as David Murphy flashed a header inches wide of Rob Green's right-hand post and then struck the killer blow on the night - and, they hope, the tie - after introducing the fresh legs of Cole and Zavon Hines.