Illinois Gov. James R. Thompson signed legislation clearing the way for night baseball at the Chicago Cubs' Wrigley Field -- for World Series, National League championship and all-star games.

The bill exempts postseason and all-star play from Pollution Control Board rules banning lights at the park by amending the state's Environmental Protection Act.

Wrigley Field, built in 1914 and home of the Cubs since 1916, is the only major league park without lights. Thompson's approval has no relevance this season because the Cubs are in last place in the NL East . . .

Ailing pitchers Ron Guidry and Rick Rhoden will not work again this season, New York Yankees Manager Lou Piniella announced. Piniella said he would not use either pitcher during the Yankees' remaining 10 games because "neither feels 100 percent and there's no reason to risk it."

Rhoden (16-10) has had a sore right shoulder since being hit by a ball off the bat of Seattle's Harold Reynolds on Aug. 18. He last pitched Sept. 12.

Guidry (5-8) has had discomfort in his left elbow and shoulder. He has not pitched since Sept. 5 . . .

The California Angels have released veteran third baseman Doug DeCinces, avoiding a buyout clause that would have been triggered if he had finished the season with the club.

The Angels had a contractual option on DeCinces for 1988 at $850,000, which it could have bought out for $141,667 if DeCinces finished the season. But by releasing him now, with 10 games remaining, the club is exempt from the buyout clause.

DeCinces, 37, was batting .234 with 16 home runs and 63 runs batted in, and had been platooned with left-handed hitting Jack Howell for most of the second half of the season.