Dull is dealing with some shoulder soreness and will be shut down for a short period, Jane Lee of MLB.com reports.

EDGE Analysis

Dull recently began feeling some fatigue in his shoulder so the A's will proceed cautiously and give the reliever some time off. It's unclear how long he'll be sidelined, so he should be considered day-to-day for the time being. Dull is currently battling for a lower-level spot in the team's bullpen.

Dull fired a scoreless two-thirds of an inning in Wednesday's 7-3 win over the Red Sox, allowing one hit.

EDGE Analysis

The 27-year-old right-hander's stellar September continues, as he's now given up just an earned run over seven innings across seven appearances, leading to a 1.29 ERA. Dull has also racked up six strikeouts and three holds during that stretch, making him one of manager Bob Melvin's most effective relief options as of late.

Dull notched his 14th hold in Wednesday's 10-8 loss to the Angels, allowing two earned runs on one hit over 1.1 innings. He also recorded a strikeout and hit a batter.

EDGE Analysis

After breezing through a 1-2-3 sixth, Dull allowed a single and hit Albert Pujols before getting the hook. Both runners eventually scored off Daniel Coulombe and Chris Hatcher, respectively, with that pair of runs going on Dull's ledger. The 27-year-old right-hander has now allowed six earned runs in his last six appearances and sports a bloated 5.52 ERA over his 29.1 innings. However, his 25.8 percent strikeout rate and frequent use in hold opportunities is keeping him relevant in fantasy circles, particularly AL-only formats.

Dull got one out on seven pitches against the only batter he faced in Monday's 3-1 loss to the Angels.

EDGE Analysis

The 27-year-old put together a second consecutive scoreless appearance after having given up an earned run apiece in four straight outings over a seven-day span earlier in the month. Dull has continued to see consistent work despite the recent struggles, and with 13 holds, he remains an option to consider in very deep AL-only formats that take that metric into account.

Dull notched his 11th hold in Friday's 8-6 loss to the Angels, pitching a scoreless one-third of an inning in which he allowed a walk.

EDGE Analysis

So far, so good for Dull since returning from an extended absence due to a knee injury, as he's now posted five consecutive scoreless outings. Dull's ERA remains a bloated 5.21 due to his struggles earlier this season, but he's improved that figure by over a run and a half since it reached 6.75 back on May 16.

Dull notched his 10th hold in Thursday's 8-4 loss to the Blue Jays, allowing a hit and recording a strikeout over a scoreless two-thirds of an inning.

EDGE Analysis

Manager Bob Melvin wasted no time throwing Dull right into the fire upon his return from a knee injury, sending him out to start the eighth inning with the Athletics clinging to a 4-3 lead. The 27-year-old was able to retire Jose Bautista and Miguel Montero before yielding a Josh Donaldson single, but the outing was certainly a positive one overall. Dull was very effective in high-leverage scenarios in his rookie 2016 campaign, so it wouldn't be out of the realm of possibility for Melvin to afford him an opportunity to close out some wins in the coming weeks as the team struggles to find a reliable ninth-inning option.

Dull (knee) was activated from the 10-day DL on Thursday.

EDGE Analysis

Dull will take the roster spot of John Axford, who was designated for assignment in a corresponding move. The right-hander struggled to the tune of a 6.32 ERA and 1.47 WHIP prior to suffering the knee strain, but the hope is that he can become a steady bullpen option following the trades of multiple other back-end relievers.

Updating a previous report, Dull (knee) will be activated from the disabled list Thursday, Jane Lee of MLB.com reports.

EDGE Analysis

Dull has been out of action since May 20 and struggled before suffering a strained right knee, but manager Bob Melvin is welcoming him back with open arms. The young right-hander was very effective last season over 70 games, often excelling in in high-leverage scenarios. With the Athletics having recently traded two experienced bullpen arms in Sean Doolittle and Ryan Madson, Melvin is looking forward to getting back a pitcher he feels was "probably our most effective reliever" at times last season.

Dull (knee) could return from the disabled list as soon as Wednesday, Susan Slusser of the San Francisco Chronicle reports.

EDGE Analysis

Despite this good news, Slusser also comments that Thursday is still the expected return date for the right-handed reliever. Dull is with the team already for Tuesday's game (although he's still inactive), so the timing of his activation is likely dependent on how he feels in the coming days as well as how heavily the bullpen is used Tuesday night.

Athletics manager Bob Melvin said that Dull (knee) could return from the 10-day disabled list as soon as Thursday, Susan Slusser of the San Francisco Chronicle reports.

EDGE Analysis

With rain in the forecast for Nashville over the upcoming days, Dull, who is rehabbing with the Athletics' Triple-A affiliate in Tennessee, could see his return delayed a bit, but it sounds like he's tentatively on track to come off the DL this week. He's already tossed a scoreless inning during both of his rehab appearances and hasn't experienced any setbacks with his strained knee, which has kept him sidelined since late May. Once activated, Dull should settle into a seventh- or eighth-inning setup role for the big club.