Nate Jones RP CWS 5 Months

Nate Jones underwent Tommy John surgery Tuesday.

Jones had been out since the first week of the season because of a lower back injury and apparently tore his UCL while rehabbing. The 28-year-old right-handed reliever will be sidelined for the majority of 2015.

Nate Jones RP CWS 5 Months

Nate Jones (back) might not return in 2014.

Jones has been out since the first week of the season with a lower back injury. "There's been enough setbacks that I wouldn't expect him to be back this year," White Sox manager Robin Ventura said Saturday. The 28-year-old right-hander might have run away with Chicago's ninth-inning job if his health cooperated.

Nate Jones RP CWS 6 Months

Nate Jones (back) has been running sprints up to 120 feet and long-tossing at 140-150 feet.

Making his way back from a microdiscectomy, Jones thinks he might return in "late July or August" but admits that it's "a complete guess" on his part. "I feel like we're getting closer, that's for sure,'' Jones said. "But no date has been set. It's all on how my body reacts."

Nate Jones RP CWS 6 Months

Daryl Van Schouwen of the Chicago Sun-Times writes that Nate Jones (back) has a "long ways to go to get back to full health."

Jones resumed throwing on Monday -- just over a month after undergoing a microdiscectomy -- but isn't close to rejoining the White Sox' bullpen. "At the beginning, it was a little rough,'' Jones said Tuesday. "I had what I would call bad days when I couldn't even put on my socks. We're still taking it day by day. Go out there and do the stretching and tossing, do a little activity and see how it reacts the next day and go from there." Those that have been stashing Jones as a potential closer option can probably go ahead and cut him loose in a redraft league.

Nate Jones RP CWS 6 Months

Nate Jones (back) played catch from about 60 feet Monday.

It's the first time he's thrown since he underwent a microdiscectomy in early May. Jones was shut down for five weeks, so it will take him a while to get built back up. Don't count on the reliever rejoining the White Sox' bullpen before the end of the first half.

Nate Jones RP CWS 7 Months

Nate Jones (back) is not yet ready for baseball activities.

However, White Sox general manager Rick Hahn did say Sunday that Jones is progressing on schedule in his recovery from a microdiscectomy. He was slated to be shut down for a month after the early-May operation, so Jones should begin workouts soon.

Nate Jones RP CWS 8 Months

Nate Jones underwent a successful microdiscectomy procedure on Monday.

Jones aggravated a back injury early on this season that he originally suffered in spring training. He'll be re-evaluated in a month. "After a month, it's conceivable we'll ramp up baseball activities and he can return soon thereafter as tolerated by the baseball activities," White Sox general manager Rick Hahn said. "At that point, it's more about getting him into pitching shape than dealing with the back. We'll see in a month and come up with a timeframe then."

Nate Jones RP CWS 8 Months

Nate Jones had surgery for his lower back injury.

The White Sox placed Jones on the disabled list April 4 and then transferred him to the 60-day DL on May 3. He's going to be out at least another month. The surgery, for now at least, is not considered season-ending.

Nate Jones RP CWS 8 Months

White Sox transferred RHP Nate Jones from the 15-day to the 60-day disabled list.

Jones certainly hasn't progressed as hope from his back/glute/whatever-the-heck-is-going-on-down-there problem. He still might figure into the White Sox's closer picture later this season, but it definitely won't happen during the month of May.

Nate Jones RP CWS 8 Months

Nate Jones (back) has yet to resume baseball activities.

White Sox manager Robin Ventura indicated 10 days ago that Jones' back injury is a little worse than the team originally thought, and that's becoming clearer by the day. There's obviously no timeable for the reliever's return.