The Internal Revenue Service is suing Yankees managing general partner Hal Steinbrenner over what it calls an "erroneous" tax refund of more than $670,000. The dispute dates to the 2001 tax year and involves a refund the IRS paid in 2009. The IRS says the refund claim was filed too late and has sued Steinbrenner and his wife, Christina, to recover $670,493.78.