Dunn looks to build on another powerful display Tuesday night while trying to help the White Sox to another victory over the Boston Red Sox.Dunn's .183 average in two-plus seasons with Chicago (20-23) is the lowest in the majors, and his 453 strikeouts are the most. The slugger, an All-Star in 2012, has been able to counter that anemic production by hitting 63 homers with 163 RBIs.This year hasn't been much different as he's hitting .172 with 11 homers and 25 RBIs -- and 54 strikeouts in 145 at-bats.He's showing signs of being able to change that, going 9 for 25 with two doubles, five homers and 13 RBIs during the White Sox's 5-2 run."When he's right, he can do a lot of damage," manager Robin Ventura said. "His pitch selection is good. I don't know mechanically exactly what it is but when a guy knows he's in the right position to hit and he's more confident, it comes down to pitch selection."Dunn's big bat was on display again Monday, hitting a three-run, two-out homer in the first inning to spur a 6-4 win in the opener of this three-game set with Boston (27-18)."It was hard to sit here and keep saying over and over and over how good I felt, with no results," Dunn said. "Hopefully these results keep coming and people start believing me that I wasn't lying to them."He's 3 for 26 with two homers and five RBIs in his last eight meetings with the Red Sox, and 0 for 4 versus Felix Doubront, Tuesday's scheduled starter.Doubront (3-1, 6.03) won both of his starts against Chicago last year, yielding four runs in 12 innings.He hasn't come close to being that sharp lately, going 0-1 with a 9.00 ERA in three starts after compiling a 3-0 record and 4.24 ERA in his first four.The left-hander battled through 104 pitches in five innings Thursday, issuing a career-high six walks while allowing two runs and three hits and not getting a decision in a 4-3 win at Tampa Bay."I finally figured out my pitches," Doubront told the team's official website. "My breaking balls, changeups and curveballs, I started getting the feeling back. I wasn't that consistent, but I had good spin and my grip was good."The Red Sox are unsure if they'll have Shane Victorino. who is day-to-day available after he injured his left hamstring running the bases in the sixth inning Monday. He missed two games last week with a back injury."Given what he's been dealing with, low back, I wasn't going to take any chances in that situation," manager John Farrell said.Dustin Pedroia is batting .449 during a 12-game hitting streak, his longest since a 15-game run from Aug. 21-Sept. 4.Chicago is expected to send Jose Quintana (2-1, 3.97) to the mound as he tries for his first win since beating Cleveland on April 24. The left-hander is 0-1 with a 5.16 ERA in four starts since.He didn't get a decision in his latest outing Thursday, surrendering four runs with three walks in 6 2/3 innings of a 5-4 win over the Los Angeles Angels.Quintana was terrific in his only start versus Boston on July 19, tossing eight shutout innings before closer Addison Reed served up a three-run, walkoff homer in a 3-1 loss.