Oller was optioned to Triple-A Las Vegas after Saturday's doubleheader against the Angels.

EDGE Analysis

He was making a spot start, and considering he has a 12.27 ERA and 2.18 WHIP in 14.2 innings through four MLB appearances, it may be a while before he gets another such opportunity. Oller has been better at Triple-A, where he has given up two earned runs while striking out eight over eight innings in two appearances.

Oller (0-3) took the loss during Game 2 of Saturday's doubleheader, allowing eight runs on six hits and three walks with three strikeouts in five innings.

EDGE Analysis

Oller escaped the first inning unscathed, but it was all downhill from there. He surrendered five runs in the second, capped by a Taylor Ward grand slam, and three more in the fifth, and likely would have been removed sooner had he not been the 27th man. Oller will likely return to the minors, though he could have a role later in the season as Oakland looks to the future.

Oller was recalled by the Athletics to serve as the 27th man for Saturday's doubleheader against the Angels.

EDGE Analysis

Oller's call-up was expected, as the right-hander will start in the second game of the twin bill. He struggled in his first three major-league starts this year, posting an 11.17 ERA and 2.38 WHIP in 9.2 innings.

Oller appears set to start one half of Saturday's doubleheader against the Angels, Martin Gallegos of MLB.com reports.

EDGE Analysis

The Athletics have yet to officially announce their plans for the twin bill, but Oller was spotted with the team Friday and Oakland has a gap in the rotation, so it looks as though he's about to be called up. Oller, who was acquired from the Mets in the Chris Bassitt trade in March, opened the season in the rotation but was demoted after giving up 13 runs (12 earned) in 9.2 innings across his first three starts.

The Athletics optioned Oller to Triple-A Las Vegas on Sunday, Matt Kawahara of the San Francisco Chronicle reports.

EDGE Analysis

Oller hadn't pitched since April 22 and wasn't lined up to start Sunday's series finale with the Guardians, so his demotion comes as little surprise. The Athletics activated James Kaprielian (shoulder) from the 10-day injured list in a corresponding move, and he'll enter the rotation and start Sunday against Cleveland in his season debut. The Athletics have a pair of doubleheader games coming up in the second week of May, so Oller could be in line for a brief stint in the minors before rejoining the big club to make a spot start. He won't make for an especially reliable fantasy option, however, after submitting an 11.17 ERA and 2.38 WHIP across 9.2 innings over his first three MLB starts.

Oller (0-2) took the loss Friday, coughing up five runs on five hits and two walks over five innings as the A's were downed 8-1 by the Rangers. He struck out two.

EDGE Analysis

Homers by Nathaniel Lowe and Andy Ibanez in the second inning kicked off a five-run eruption by Texas, and the Oakland offense never came close to climbing out of the hole. Oller tossed only 47 of 88 pitches for strikes before exiting, and his hold on a rotation spot seems very tenuous given his 11.17 ERA, 2.38 WHIP and 8:8 K:BB through his first 9.2 big-league innings.

Oller (0-1) allowed three runs (two earned) on five hits and three walks over 3.1 innings Sunday, striking out three and taking a loss against the Blue Jays.

EDGE Analysis

Oller allowed one run in each of the first three innings; he allowed an RBI sacrifice fly to Lourdes Gurriel in the first followed by RBI singles from Santiago Espinal and Matt Chapman. The 27-year-old owns a brutal 13.50 ERA through 4.2 innings in two appearances this season. Oller is currently expected to face the Rangers at home next week.

Oller gave up five runs on five hits and three walks over 1.1 innings during Tuesday's extra-inning loss to the Rays. He had three strikeouts and didn't factor in the decision.

EDGE Analysis

Oller surrendered a solo homer in the opening frame and then allowed four more runs while recording only one out during the second inning. It was a rough debut for the 27-year-old, who won a spot in Oakland's starting rotation after Sean Manaea was traded to San Diego. Oller won't be on the fantasy radar until he finds some level of success in the majors, and he lines up for a tough matchup with the Blue Jays on Sunday.

Oller is scheduled to start the Athletics' fifth game of the season Tuesday in Tampa Bay.

EDGE Analysis

Heading into the final week of spring training, Oller looked set to miss out on a spot in the Athletics' Opening Day rotation, but he'll end up stepping in as Oakland's fifth starter after Sean Manaea was dealt away to the Padres on Sunday. The starting assignment in Tampa Bay will mark the MLB debut for Oller, who struck out nine over 6.1 Cactus League innings but was lit up for seven earned runs on 11 hits and two walks. The 27-year-old right-hander turned in a 2.45 ERA and 1.02 WHIP over a larger sample of 44 innings at Triple-A Syracuse in the Mets organization a season ago, but fantasy managers will still want to temper expectations for Oller as he begins his big-league career. Even with a two-start week on tap -- he's tentatively scheduled to face the Blue Jays in Toronto on April 17 -- Oller looks like an unreliable lineup option outside of AL-only leagues.

Manager Mark Kotsay said Saturday that Oller will take on a bullpen role for the Athletics to begin the 2022 campaign, Martin Gallegos of MLB.com reports.

EDGE Analysis

Oller was informed Friday that he'd made the Opening Day roster, and he'll serve as a multi-inning reliever to begin the year. The right-hander made eight starts at Triple-A Syracuse last season and posted a 2.45 ERA and 1.02 WHIP in 44 innings. He'll be one of the top options to fill in as a spot starter if needed.