Definition of "call-up"

Fly-half Aaron Cruden hyper-extended his knee horribly in contact and was carried off the pitch, forcing Graham Henry to bring on Donald - a man who was fishing for whitebait a fortnight ago before injuries to Dan Carter and Colin Slade triggered his emergency call-up.

2011 October 23, Tom Fordyce, “2011 Rugby World Cup final: New Zealand 8-7 France”, in BBC Sport‎