X-rays on Conor Jackson's right knee came back negative.

Jackson left Sunday's game with a bruised right knee, though he exited holding his left arm, after he ran full-speed into the right-field wall. In addition to the knee injury, he also has a sore right wrist, forearm and ribs. "I think the worse is probably the knee," Jackson said. "It's still banged up. After a few days of treatment, it will be all right." Darnell McDonald replaced him on Sunday. Jackson will probably need a few days rest.

Updating a previous item, Conor Jackson left Sunday's game with a bruised right knee.

Jackson exited holding his left arm, but evidently it's his leg that's the issue. It's not clear how severe the injury is, though we're guessing it's a day-to-day thing given that he initially stayed in the game.

Conor Jackson left Sunday's game in the fourth inning with an apparent arm injury.

Jackson suffered what could have been a serious injury when he ran full-speed into the right-field wall, but he originally stayed in the game, so his injury might not be too bad. He was replaced by Darnell McDonald.

Red Sox acquired OF Conor Jackson from the Athletics for RHP Jason Rice.

Jackson, 29, has hit .249/.315/.342 with four home runs and 38 RBI in 102 games this season. The Red Sox will use the utilityman infrequently, but he bolsters their bench with a bit more quality depth. Rice has a decent fastball and has enjoyed some success this year at the Triple-A level, but he'll have to develop a quality secondary pitch to make it as a major league reliever.

Conor Jackson has cleared waivers.

ESPN's Buster Olney says the Red Sox have inquired about the 29-year-old utilityman, but also that talks are not likely to lead to a trade. Jackson has posted an underwhelming .258/.323/.354 batting line, four home runs and 38 RBI in 99 games this season. He will be a free agent this winter.

Conor Jackson returned to action on Thursday August 18.

Conor Jackson went 0-for-4 in his return to the lineup Thursday against the Jays.

Jackson missed four games with neck and back stiffness. He played left field tonight, allowing the A's to keep Brandon Allen's bat in the lineup at first base.

Conor Jackson (neck, back) is out of the Athletics' starting lineup for the fourth straight day Wednesday.

Jackson is currently sidelined with neck stiffness, but could return to the starting lineup for Thursday's game. Though with the way Brandon Allen is hitting right now, he might be losing his grip on the first base job.

Athletics manager Bob Melvin thinks Conor Jackson (neck, back) could be back in the lineup by Thursday.

Jackson is missing a second straight start Tuesday due to a tight neck/back. Brandon Allen is filling in at first base.

Conor Jackson (neck, back) is out of the Athletics' lineup for the second straight day Monday.

Jackson received a cortisone shot Sunday to address pain his neck/back area. He will likely need to miss a few more days. Brandon Allen should see most of the playing time at first base during his absence.

Conor Jackson was scratched from Sunday's lineup due to neck tightness.

It will give the A's an excuse to play Brandon Allen, which they should have been doing, anyway. Consider Jackson day-to-day.

Conor Jackson hit his first triple since 2008 and delivered a sac fly Thursday in the route of the Blue Jays.

Jackson had six triples in 2008, but none in 611 at-bats since until his two-run three-bagger today. The addition of the sac fly later gave him his first three-RBI game of the season.

Conor Jackson returned to action on Tuesday August 9.

Conor Jackson (back) is not in the lineup for the second straight game Sunday.

Jackson has some back soreness, but it's nothing to be concerned about. He has a good shot to play on Tuesday following the A's off day.

Conor Jackson was not in Saturday's lineup due to a sore back.

A's manager Bob Melvin doesn't think Jackson will be out more than a day or two. He might sit out again Sunday before returning on Tuesday following the off day.

Conor Jackson's bat remained hot on Sunday, as he finished 2-for-3 with his 3rd homer.

He added a run and four RBI in the contest and lifted his batting after to .249. Sunday's effort marks the first time he has hit two dingers in one month since July 2008. He will carry a five-game hitting streak into Detroit on Tuesday.

Conor Jackson singled in a run in his return to action Friday.

Jackson was pretty banged up just before the break as a result of a collision at first base with the Rangers' Elvis Andrus, but he's had time to recover. He'll be fine moving forward.

Conor Jackson (ribs, back) is not in Sunday's lineup.

Jackson is still pretty sore after his collision with the Rangers' Elvis Andrus Saturday. He thinks he'll be available off the bench, though, and shouldn't have any trouble healing up over the All-Star break.

According to Joe Stiglich of the Bay Area News Group, Conor Jackson was "visibly in pain" in the A's clubhouse following his collision with Elvis Andrus in the ninth inning Saturday.

Jackson was hurt on what should have been the final play of the game, but Jemile Weeks' throw sailed wide and caused him to collide with Andrus. He said after the game that his ribs and back were sore, though it's not clear if he might have to miss some action.

Conor Jackson went 3-for-4 with a double in Oakland's loss to the Phillies on Sunday.

The A's could muster just eight total hits as Roy Halladay went the distance for Philadelphia, so Jackson's day was an impressive one. He had been just one for his past 12 coming into today, however. He hasn't exactly taken Oakland's first base job and ran with it since Daric Barton was sent to the minors.