The Cubs aren't taking any chances with Kerry Wood. Wood went on the disabled list yesterday after the Cubs decided they didn't want the right-hander returning to the rotation until his sore triceps is completely healed.

The move was backdated to May 12, the day after Wood left a game after two innings because of tightness in his right triceps. A five-game suspension that Wood had completed Wednesday night for confronting plate umpire Eric Cooper on April 17 about balls and strikes was reinstated.

Meantime, RHP Mark Prior threw three hitless innings in his first minor league rehabilitation start of the season for the Cubs. Prior, on the disabled list all year with an inflamed Achilles' tendon and a sore elbow, said there was "room for improvement" after his outing for Class A Lansing of the Midwest League. He struck out five and walked one, throwing 25 of 45 pitches for strikes.

* A BAD STUMBLE: Padres LHP David Wells said the accident that put him on the disabled list was caused when he tripped over a bar stool in his kitchen.

Wells denied reports that the mishap Sunday night happened while he was roughhousing with a friend, but admitted the chain of events started when a buddy slapped him on the back of the neck.

* DISABLED MET: The Mets placed LHP Al Leiter on the 15-day disabled list retroactive to May 12 and purchased the contract of OF Esix Snead.

-- From News Services