Mark Langston of the Montreal Expos is...

Mark Langston of the Montreal Expos is among 18 players who filed for free agency on the first possible day. Langston, acquired by the Expos from Seattle on May 25, is seeking at least $3 million per season and is the most talented starting pitcher available among the 117 players eligible for free agency.

First baseman Nick Esasky of the Boston Red Sox was the first player to file with the Major League Baseball Players Assn. Reliever Mark Davis of the San Diego Padres is expected to announce today that he also has filed.

Others filing: Expo outfielder Hubie Brooks, pitchers Jeff Reardon and Shane Rawley of Minnesota, pitchers Floyd Bannister and Steve Crawford of Kansas City, catcher Tony Pena and pitcher Ted Power of St. Louis, first baseman Pete O’Brien of Cleveland, pitchers Frank Tanana of Detroit and Walt Terrell of the New York Yankees, outfielders Rick Leach of Texas and Lee Mazzilli of Toronto, outfielder Dave Collins of Cincinnati, pitcher Rick Rhoden of Houston, infielder Tim Teufel of the New York Mets and outfielder Carmelo Martinez of San Diego.

The remaining players eligible have until Nov. 13 to file.