Roll Up One's Sleeves Meaning

(idiomatic) To prepare to work.

Example: 2011 October 1, Phil Dawkes quoting Steve Bruce, “Sunderland 2 - 2 West Brom”[1], BBC Sport:
  "We could quite easily have folded today but thankfully they rolled up their sleeves and got back into it. We could even have won it. We had a couple of great opportunities but we just ran out of juice."