It is a catch-up stream.  I have also attached the log.

C:\Users\xxxx>get_iplayer -V
get_iplayer 3.13.0, Copyright (C) 2008-2010 Phil Lewis
 This program comes with ABSOLUTELY NO WARRANTY; for details use --warranty.
 This is free software, and you are welcome to redistribute it under certain
 conditions; use --conditions for details.

C:\Users\xxxx>get_iplayer --get http://www.bbc.co.uk/sport/live/commonwe...s/43750888
get_iplayer 3.13.0, Copyright (C) 2008-2010 Phil Lewis
 This program comes with ABSOLUTELY NO WARRANTY; for details use --warranty.
 This is free software, and you are welcome to redistribute it under certain
 conditions; use --conditions for details.


WARNING: Failed to download JSON PID info: http://www.bbc.co.uk/programmes/43750888.json
WARNING: Could not determine PID type (43750888). Trying to record PID directly.
Episodes:
get_iplayer - 43750888, BBC iPlayer, 43750888
INFO: 1 total programmes

WARNING: Could not download programme metadata from http://www.bbc.co.uk/programmes/43750888.json
ERROR: Failed to get version PID metadata from iPlayer site (JSON)
WARNING: No programmes are available for this PID with version(s): default

get_iplayer only supports programmes available through the iPlayer site. BBC Sport site is not supported.