CHICAGO — Right fielder Shane Victorino (left hamstring) is out of the Red Sox lineup for a second straight day. But he has improved and ran on the treadmill.
"There's increased looseness in the hamstring but still unavailable tonight," manager John Farrell said.
There is no timetable in terms of when Victorino might play.
"Today was a big day as far as his status and improvement that he's showing," Farrell said. "Our plan was to kind of re-evaluate where he's at tomorrow and then go from there."
Farrell said the Sox are hopeful Victorino avoids the disabled list. But it remains a possibility.
• David Ross, out with a concussion, will catch for Double A Portland Thursday. The Sea Dogs have an 11 a.m game at Hadlock Field. Franklin Morales, who is on a rehab assignment, will pitch the game and is scheduled for 80 pitches and/or five innings.
Farrell said that is the only rehab game planned for Ross. So he could be activated as soon as Friday.
• Ryan Dempster flew back to Boston to get a full night of sleep in advance of his start Thursday against Cleveland. Dempster threw 127 pitches in his last start and decided to skip his usual bullpen session on Tuesday in favor of making some throws from flat ground.
"As far as how his arm felt coming out of his last start, he didn't feel like there was any changes or lingering effect from the pitches he did throw," Farrell said.
• Northwestern RHP Luke Farrell, a second-team All-Big Ten selection and the son of the Red Sox manager, was at the park Wednesday and played catch with his dad. The younger Farrell is expected to be picked in the first 5-10 rounds of the draft.
• Colorful White Sox announcer Ken "Hawk" Harrelson visited the Red Sox clubhouse this afternoon. Harrelson played for the Red Sox from 1967 until he was traded early in the 1969 season.
Harrelson had 35 home runs and 109 RBIs in 1968 and finished third in the AL Most Valuable Player voting behind Detroit's Denny McLain and Bill Freehan.
All McClain did that season was go 31-6 with a 1.96 ERA. He made 41 starts and threw 336 innings.