Morales allowed a run on two hits and struck out six without walking a batter over six innings in a no-decision versus the Mariners on Friday.

Morales retired the first 13 batters he faced before Eugenio Suarez hit a solo home run in the fifth inning. Through four appearances (three starts), Morales is looking major-league ready, posting a 1.72 ERA, 1.15 WHIP and 15:8 K:BB over 15.2 innings, with Friday's outing being against his toughest opponent yet. It's not yet clear when he'll start again, but the Athletics are at home versus the Tigers and Rangers in a pair of three-game series next week.

Munoz allowed a run on three hits and a walk while striking out two over one inning to earn the save in Friday's 3-2 win over the Athletics.

Munoz gave up three straight one-out singles to bring in a run, and then loaded the bases with a walk. He was able to get the last two outs, but this was far from a pretty effort from the Seattle closer. He's given up two runs on seven hits and six walks while striking out nine over eight innings in August, picking up six saves in his eight appearances. Munoz is at a 1.47 ERA, 1.04 WHIP and 63:24 K:BB through 49 innings this season. He reached the 30-save mark for the first time in his career by closing out Friday's game.

Topa notched the save in Friday's 9-7 win over the White Sox, allowing two hits and one walk with no strikeouts in 1.2 scoreless innings.

Topa registered save No. 3 on the year, and each of those have come following the trade deadline. The right-hander appears to have the upper hand over Cole Sands, who worked the seventh inning Friday, in Minnesota's closer committee in the aftermath of the Jhoan Duran trade. Topa has a 0.84 ERA over 10.2 innings in August, whereas Sands owns a 4.50 ERA across his 10 frames this month.

Chapman earned the save in Friday's 1-0 win over the Yankees, striking out two in a perfect ninth inning.

Chapman was handed a one-run lead in the ninth and slammed the door on just 10 pitches. The 37-year-old has now strung together 12 straight scoreless outings since July 26, as he continues to turn back the clock in dominant fashion. For the year, he's 24-for-26 in save chances with a 1.08 ERA, 0.70 WHIP and 71:14 K:BB across 50 innings.

Hoffman earned the save in Friday's 5-2 win over the Marlins, allowing one walk without recording a strikeout in a scoreless, hitless ninth inning.

Hoffman was called upon to protect a three-run lead in the ninth and worked around a two-out walk to slam the door. Aside from an ugly blown save Aug. 10 in which he issued five walks, the 32-year-old has now strung together nine straight scoreless outings. On the year, he's 28-for-33 in save chances with a 4.08 ERA, 1.06 WHIP and 73:17 K:BB across 53 innings.

Santos (knee) is expected to begin a rehab assignment soon and is hopeful to return in mid-September, Adam Jude of The Seattle Times reports.

Santos has been sidelined since late April with a knee injury that required surgery. The 25-year-old is getting close to pitching in games, but he'll require a lengthy minor-league rehab assignment before being activated from the 60-day injured list. Santos has a 5.14 ERA in seven big-league innings this season.

Stephenson (biceps) was activated from the 60-day injured list Friday.

Stephenson has been on the shelf since June 2 due to right biceps inflammation, and after a lengthy rehab process, he's been cleared to rejoin the active roster. The 32-year-old has appeared in just two MLB games this season, tossing a scoreless inning with two strikeouts. He yielded two runs across three innings in three rehab appearances. Chase Silseth was optioned to Triple-A Salt Lake in a corresponding move.

The Athletics placed Bowden on the 15-day injured list Friday with a strained left lat.

Bowden appeared in 11 games after being called up from Triple-A Las Vegas on July 23. The 30-year-old will require a stint on the injured list with a lat strain, opening up a spot in the bullpen for Eduarniel Nunez. Bowden has a 4.22 ERA in 10.2 innings with the A's.

The Athletics placed Perkins on the 15-day injured list Friday with a strained right shoulder.

Perkins appears to have picked up the injury during Thursday's start against Minnesota, when he yielded two runs over five innings en route to his third win of the campaign. The 25-year-old has a 4.19 ERA in 38.2 innings with the A's this season. Joey Estes was recalled from Triple-A Las Vegas to fill Perkins' spot on the roster and presumably in the rotation.

The Athletics recalled Nunez from Triple-A Las Vegas on Friday.

Nunez will rejoin the A's active roster for the first time since being optioned Aug. 6. The 26-year-old will fill Ben Bowden's (lat) spot in the bullpen. A trade deadline acquisition from San Diego, Nunez has allowed two runs with a 10:2 K:BB in five innings with Las Vegas.