50 in the team really go down? (5)
I believe the answer is:
slide
'go down?' is the definition.
(I've seen this in another clue)
'50 in the team really' is the wordplay.
'50' becomes 'l' (Roman numeral).
'in the' means one lot of letters goes inside another.
'team really' becomes 'side' (both can mean a sports team. I am not sure about the 'really' bit.).
'l' put inside 'side' is 'SLIDE'.
Can you help me to learn more?
(Other definitions for slide that I've seen before include "Slip, slither, skid" , "that's put under the microscope" , "Microscope glass" , "Decline" , "Trombone part" .)