Thompson has cleared waivers and will report to Triple-A Nashville, MLB.com's Jane Lee reports.

Thompson was designated for assignment Friday, but will remain with the organization to provide pitching depth at the minor league level. He hasn't allowed a run in his last four appearances in the minors, and if he keeps that up, could get his 40-man roster spot back later in the season.

Thompson was designated for assignment Friday.

Thompson was reinstated from the DL earlier in the week and optioned to Nashville, where he'll likely remain for the next few weeks as he looks to prove healthy and effective enough to be considered for a call-up once rosters expand.

Thompson (shoulder) was reinstated from the 60-day DL and optioned to Triple-A Nashville on Sunday, John Hickey of the Bay Area News Group reports.

Thompson has been rehabbing a shoulder injury for the majority of the season, and will continue that process at the Triple-A level. If he can show some consistency there, look for the As to consider him as a possible September call-up.

The Oakland Athletics activated pitcher Taylor Thompson from the 60-day disabled list and optioned him to Triple-A Nashville on Sunday, according to the Bay Area News Group.

The Oakland Athletics activated pitcher Taylor Thompson from the 60-day disabled list and optioned him to Triple-A Nashville on Sunday, according to the Bay Area News Group. Thompson has not pitched for the big club this season as he continues to recover from a shoulder injury, and will continue his rehabilitation in the minors before a potential September call-up.

Thompson (shoulder) will begin a rehab assignment with High-A Stockton on Monday, Susan Slusser of the San Francisco Chronicle reports.

Thompson, who has been out since spring training with a strained shoulder, is expected to stick around with Stockton for four appearances. After that, he'll likely test out his health at one of the Athletics' upper-level affiliates as he looks to shake off some more rust.

Thompson (shoulder) is set to throw 20 pitches during batting practice Thursday, Susan Slusser of the San Francisco Chronicle reports.

After his bullpen sessions last week went without a hitch, Thompson will advance to the next phase of his rehab. If Thursday's activity goes well, he could embark on a rehab assignment at a minor-league affiliate while the Athletics remain on break for the All-Star Game.

Thompson (shoulder) threw a 35-pitch bullpen session Monday, Jane Lee of MLB.com reports.

The A's were satisfied with the results of the session, and the expectation is that Thompson will move on to facing live hitters in the near future. Thompson, who was placed on the 60-day DL back in February, remains without a return timetable.

Thompson (shoulder) was placed on the 60-day DL on Thursday.

A shoulder strain will put Thompson on the shelf for an extended period, though a specific timetable for his return has not been established. The right-hander was able to overcome his control issues with the White Sox's Triple-A Charlotte affiliate last season, posting a 2.14 ERA and 10.4 K/9 despite a 4.4 BB/9 rate over 59 innings. The A's then claimed Thompson off waivers in early November.

The A's claimed Thompson off waivers from the White Sox on Tuesday, Mark Gonzales of the Chicago Tribune reports.

After struggling in his first extended audition at Triple-A at the end of 2013 (7.88 ERA), Thompson returned and posted a 2.14 ERA in 39 appearances at that level this past season, though he did take a step backward with his control (4.4 BB/9). Regardless, the A's liked the right-hander enough to take a flier on him, and they figure to bring the 27-year-old to major league spring training to compete for one of their final bullpen spots. Bryan Anderson was outrighted to Triple-A Nashville to make room on the 40-man roster.

Thompson was optioned to Triple-A Charlotte after Sunday's game, MLB.com's Scott Merkin reports.

Thompson's first stint in the majors was rather uneventful, as he allowed three runs over 4.1 innings of relief work. He's having a decent year at Triple-A Charlotte, with a 2.61 ERA, 3.48 FIP, 9.9 K/9 and 4.5 BB/9 in 31 appearances (48.1 innings).