One extra wager can ultimately make some money (4)
I believe the answer is:
earn
'make some money' is the definition.
'earn' can be an answer for 'make' (as in making money). I'm not sure about the 'some money' bit.
'one extra wager can ultimately' is the wordplay.
'ultimately' indicates one should take the final letters.
The final letters of 'one extra wager can' are 'EARN'.
Can you help me to learn more?
(Other definitions for earn that I've seen before include "Make money" , "net" , "Twist out of shape" , "Get by working" , "Pull in" .)