Supreme Court nominee Brett M. Kavanaugh incurred tens of thousands of dollars of credit card debt buying baseball tickets over the past decade and at times reported liabilities that could have exceeded the value of his cash accounts and investment assets, according to a review of Kavanaugh’s financial disclosures and information provided by the White House.

White House spokesman Raj Shah told The Washington Post that Kavanaugh built up the debt by buying Washington Nationals season tickets and tickets for playoff games for himself and a “handful” of friends. Shah said some of the debts were also for home improvements.

Kavanaugh’s most recent financial disclosure forms reveal assets between $15,000 and $65,000, which would put him at the bottom of the financial ranking of justices, most of whom list well over $1 million in assets. The value of residences is not subject to disclosure.

Unlike some of the other justices, Kavanaugh has worked more than two decades in the public sector and has not built wealth as a private lawyer.