St. Louis first baseman Jack Clark will miss this weekend's important series against the second-place New York Mets because of a severely sprained right ankle.

Clark injured the ankle in the sixth inning of the first-place Cardinals' 8-3 loss to the Expos in Montreal Wednesday night.

He grounded to third baseman Tim Wallach, who threw wide to first. Trying to avoid the tag by first baseman Andres Galarraga, Clark fell on his right side. X-rays at a New York hospital proved negative.

Clark is fourth in the National League with 36 homers and third in RBI with 106, leading the club in both categories . . .

The Kansas City Royals have activated Jim Eisenreich after putting him on the disabled list to make room for outfielder Gary Thurman. Eisenreich is suffering from a sore elbow and has not had a recurrence of Tourette's syndrome, the nervous condition that nearly forced him out of baseball.

"The rumors started again back home, Mom and Dad told me when they were in Kansas City last weekend," said Eisenreich. "Everything I do I have to prove I can do. That's just the way it is. People have one idea about me and there's nothing I can do to change that."