AMENDMENT NO. 1 TO THE AMENDED AND RESTATED AGREEMENT OF LIMITED PARTNERSHIP OF LEGACY RESERVES LP

LEGACY ANNOUNCES REVISION TO DECEMBER 31, 2006 UNREALIZED MARK-TO-MARKET SWAP POSITION

MIDLAND, Texas—(PRIMENEWSWIRE)—Legacy Reserves LP (NASDAQ:LGCY) today announced it has revised its unaudited, preliminary earnings downward by approximately $0.43 million due to a reporting error by the counterparty on Legacy’s natural gas swaps. The swap counterparty has now revised our unrealized mark-to-market swap position as of December 31, 2006. The subject change to our financial statements is a non-cash reduction to earnings, which does not affect our ability to make our expected cash distributions.

For the year ending December 31, 2006, earnings are $4.36 million ($0.26 basic and diluted earnings per unit). Based on information previously available from the counterparty, Legacy on March 20, 2007 had reported earnings for this period of $4.79 million ($0.29 basic and diluted earnings per unit). This non-cash reporting error, whi