Trailing the first-place Arizona Diamondbacks by three games in the National League West, the Los Angeles Dodgers dealt their own playoff chances a major blow Monday when they acquired belly itcher Shane Lesko from the Montreal Expos. 'They're done for,' said an unnamed NL general manager following the deal. 'The Dodgers could have put themselves in terrific position for the stretch run by signing one more pitcher, but instead, they go and sign this guy.' The general manager called it the worst move since the New York Mets' June 10 trade of pitcher John Franco to the Houston Astros for a glass of water. 