Jamie McCourt's concerns about the Los Angeles Dodgers' shaky financial status earlier this decade led her to sign an agreement that now prevents her from claiming any share of ownership of the team, attorneys for Frank McCourt argued in court papers filed Tuesday. Jamie McCourt filed for divorce Tuesday afternoon in Los Angeles Superior Court, asking that the agreement cited by Frank McCourt be ruled unenforceable and arguing that the document never was intended to bar her from ownership. Frank McCourt responded late Tuesday afternoon by asking the court immediately to declare him sole owner of the team and to handle the remaining issues in the divorce later. The McCourts announced their separation two weeks ago. Frank McCourt claimed he was sole owner of the Dodgers, and Jamie McCourt said she had an ownership stake, setting up the legal battles that started to play out Tuesday. Frank McCourt fired his wife as the team's chief executive last week. As part of her divorce filing, she asked the court to order her reinstatement. In the filing, Jamie McCourt says she is unemployed, with no means of financial support other than savings and investments. She asks the court to order Frank McCourt to pay her $320,967 a month in spousal support if she is reinstated as the Dodgers' CEO, or $487,634 a month if she is not. The couple bought the team for $431 million from the Fox Group, which had tired of sustaining huge financial losses to operate a team no longer integral to its entertainment business. The deal closed Jan. 29, 2004. The Dodgers reported losses of $57 million in 2000, $85 million in 2001, $83 million in 2002 and $78 million in 2003, according to the court papers filed by Frank McCourt. The possibility of significant and ongoing losses compelled Jamie McCourt to ask that the couple's residential assets be put solely in her name, so that they could be protected from any claims that creditors might place against Frank McCourt or the Dodgers, according to the filing. On March 31, 2004, the McCourts each signed an agreement that provided Frank McCourt with sole ownership of the team and other business interests and provided Jamie McCourt with sole ownership of eight residential properties as well as artwork, cars and boats, according to the filing. This marital property agreement, Frank McCourt argues, was drafted to supersede California's community-property law, under which assets accumulated during a marriage are split 50-50 in a divorce. The couple purchased two homes in the affluent Holmby Hills neighborhood of Los Angeles later that year and signed documents conveying the residences to Jamie McCourt, according to Los Angeles County property records. Frank McCourt further argues that Jamie McCourt never was approved by Major League Baseball as an owner and never sought any such approval. On April 13 of this year, in her capacity as the Dodgers' chief executive, she signed and submitted a routine statement of club ownership to MLB, in which she verified that Frank McCourt owned 100 percent of the team, according to the filing. The filing does not say how much money the Dodgers have made, or lost, under the McCourt ownership. However, Forbes magazine has estimated that the Dodgers turned a profit of $16.5 million in 2008. In June of last year, the McCourts consulted a lawyer about modifying the marital property agreement so that the couple's assets, including the team, could be governed by community-property law, according to court papers. The modified agreement was drafted but never signed, and in May of this year Frank McCourt decided not to proceed, according to the filing. Jamie McCourt had consulted a divorce lawyer by then, according to the filing. 