-->TOKYO (Reuters) - Wal-Mart Stores Inc. (WMT.N: Quote, Profile, Research) finalized a $1 billion rescue package for its struggling unit Seiyu Ltd. (8268.T: Quote, Profile, Research) on Wednesday and named one of its top officials to head the Japanese retailer, which also widened its loss estimate.

Under the deal, Wal-Mart will inject 67.5 billion yen to take a controlling 53.56 percent voting stake in Seiyu, up from 42.48 percent now, allowing the world's biggest retailer to step further into the crowded Japanese market.