06 Tax Situation

[BillieJoe65]

For '06 if I only reported my cashouts on my annual returns, am I putting myself at a big risk. For example if 2006 online poker winnings totaled around $30,000 but I reported $20,000 and left the other $10K on Absolute as my working bankroll, would I be at serious risk of an audit?

I don't have records of win/loss sessions for the year unfortunately. Also, none of my transactions were through Neteller if that matters. Even if I did get audited, would could the IRS do? Ask for all of my records from Absolute poker? Would that ever happen?