Below you will find a breakdown of how to interpret both your betting activity information, and also your summary information.

Betting Activity Information

You Spent: The sum of all stakes for the period (This is based on the bet placement date). The amount includes bets placed using Bonus Bets and does not include any voided/cancelled bets.
You Won: The sum of all bets settled as a win for the period (This is based on the date the bet is settled and not the date the bet was placed). 
You Lost: The sum of all bets settled as a loss for the period (This is based on the date the bet is settled and not the date the bet was placed). Any losses from Bonus Bets are represented as 0.
Net Result: This is the difference between the amount You Won and the amount You Lost for the period.

Summary Activity Information

Opening Balance: Your Opening Balance as of 12:00 AM at the start of your Activity Statement period.
Deposits: The sum of all successful deposits for the period.
Withdrawals: The sum of all successful withdrawals for the period (any cancelled withdrawals will not be included in this amount).
Manual Adjustments: The sum of all manual adjustments for the period. Manual adjustments are where Sportsbet has had to adjust your account due to rejected payments, processing errors, and