CHICAGO -- Left fielder Dayan Viciedo returns to the Chicago White Sox lineup on Sunday after sitting out Saturday as a precautionary measure after experiencing tightness in both hamstrings on Friday night.

Meanwhile, it doesn’t look like third baseman Brent Morel will return to the club anytime soon after he re-aggravated a lower back injury on Thursday during a rehabilitation assignment with Triple-A Charlotte.

“We’re figuring out where to send him to get better information,” manager Robin Ventura said on Sunday. “We’re going to figure out exactly what it is and probably take care of it. If there has to be surgery, just do it. But I think at this point they’ve done a lot of things you can do without that. So send him to somebody who can specifically find out what it is.”

Here’s the Sox’s lineup for today, as pitcher Phil Humber looks to bounce back from last week's five-inning outing against the Toronto Blue Jays:

1. Alejandro De Aza -- CF
2. Gordon Beckham -- 2B
3. Adam Dunn -- DH
4. Paul Konerko -- 1B
5. Alex Rios -- RF
6. Viciedo -- LF
7. Alexei Ramirez -- SS
8. Tyler Flowers -- C
9. Orlando Hudson -- 3B