Beef team gets medal for second place (10)
'beef' is the definition.
(I've seen this before)
'second place' is the wordplay.
'second' becomes 'silver' (I've seen this before).
'place' becomes 'side' (I am not sure about this - if you are sure you should believe this answer much more).
'team gets medal for' acts as a link.
This may not be correct. Some or all of it may be part of another bit of the clue.
Can you help me to learn more?
(Other definitions for silverside that I've seen before include "Crown of a round of beef cut from the leg", "Joint", "Cut of meat", "piece of meat".)