White Sox pitcher Ramon Troncoso was placed on the 15-day disabled list Saturday after going to the hospital with chest pain Friday. Troncoso was diagnosed with pericarditis a condition in which the tissue around the heart becomes inflamed. Manager Robin Ventura said Troncoso had a similar problem a few years ago. “It’s serious stuff where you just don’t take a chance” Ventura said. “(You) let medical people take care of it.” Petricka up: The Sox purchased the contract of right-hander Jake Petricka to replace Troncoso who has a 1-4 record and 5.25 ERA in 25 relief appearances this year. Petricka who has no major league experience and was mostly a starter until this season is 2-0 in 10 appearances for Triple-A Charlotte this season. He had a 1.17 ERA one save and 17 strikeouts in 15 1/3 innings. About three hours before game time Petricka said he hadn’t said more than hello to the Sox coaches but knew what he wanted to show them. “I just want to show I can compete with these guys and throw strikes. Attack the zone. If you get hit it’s better than walking people” Petricka said. “I wouldn’t mind (getting in the game) but at same time I’m going to take in the moment and enjoy everything pitch or not pitch.” Ventura compared Petricka 25 to Sox reliever Nate Jones a couple of years ago. “Working his way through you know he throws hard and it’s more about location right now and being able to pitch” Ventura said. “We did it a lot last year where we just bring guys up and throw him in there. The way our games are you know he’s going to get used. “There’s not going to be a breaking in period or anything like that. If he’s up he’s throwing.”