Minnesota Twins center fielder Jim Eisenreich was placed on the 15-day disabled list yesterday, possibly marking the end of his major league career.

The move was made after a reoccurence of the nervous disorder that shortened his rookie season last year. The Twins made the decision after Eisenreich, 23, asked to miss yesterday's game.

"It's too hard to play," Eisenreich said before the game with the Detroit Tigers. "It isn't any fun. I can't hide it (his condition) from myself."

"Right now it doesn't look good for me," said Eisenreich. "Whatever I do will be (for) the best. As far as baseball, it doesn't look good."

Eisenreich hit .400 in spring training and .286 in the first two games of the season.

During the offseason, after a number of drugs failed to cure the problem, accentuated by twitching hyperventilation, Eisenreich tried a form of self-hypnosis which seemed to help, until yesterday . . .

Ray Grebey announced his resignation as executive director of the Major League Player Relations Committee, but will stay on as a consultant. Grebey represented the major league owners during the 57-day players' strike in 1981 . . .

ABC has reached agreement with major league baseball on a six-year extension of its television contract for 1984 through 1989. When combined with the major leagues' tandem deal with NBC, reached early last month, baseball will receive an estimated $1.2 billion.

NBC, which had said it would pick up the other half of the deal if ABC turned it down, reportedly will pay $550 million, ABC $575 million.

Under the terms of the agreements, ABC will show the World Series in 1985, 1987 and 1989 and will cover league championships and All-Star games in 1984, 1986 and 1988, and will continue its Monday night and Sunday afternoon series. NBC, which carries the World Series and league championships in alternate years, will have commercial television exclusivity on Saturday for the first time.