"I have been taking some fly balls in left, but you can't simulate how it will go in a game," Dunn said. "I anticipate it will go good; once I get out there I am sure it will all come back."
Dunn is tied for second in the American League with 12 home runs and third with 28 RBIs as he comes back from a dreadful season, during which he hit .159 with 11 home runs and 42 RBIs in 122 games. Before joining the White Sox two seasons ago, Dunn had seasons of 40, 40 and 38 home runs.
"You look at the lineup and how important he is for us," Ventura said. "He has been hitting third for us most of the time, so that becomes a factor getting him in there."
Dunn has 25 home runs at Wrigley Field, which ties him with Albert Pujols for most by an active opposing player.
Dunn has played 1,099 games in the outfield. He spent his entire career in the National League before signing a four-year, $56 million contract with the White Sox on Dec. 9, 2010.
Ventura will sit regular left fielder Dayan Viciedo, who had his best game of the season Monday, hitting a home run and driving in a career-high four runs.