The Pittsburgh Pirates continued their roster slashing...

The Pittsburgh Pirates continued their roster slashing Friday, cutting veteran reliever Bob Patterson, a left-hander who made $650,000 last season. . . . The Atlanta Braves released veterans Jeff Treadway and Tommy Gregg, and added to the roster pitchers Donnie Elliott, Brian Bark, Shawn Holman and Michael Potts, outfielders Tony Tarasco and Troy Hughes, second baseman Hector Roa and catcher Tyler Houston. . . . The Florida Marlins sent left-handed pitcher Scott Baker to the Oakland A’s to complete the trade for shortstop Walt Weiss. Oakland also acquired catcher Eric Helfand.