SAN DIEGO -- After parts of three seasons in the big leagues, Luis Perdomo is headed to Triple-A after all.
The Padres optioned the 24-year-old right-hander to Triple-A El Paso on Thursday afternoon, reinstating righty setup man Kirby Yates (right ankle tendinitis) from the 10-day disabled list.
The move comes less than 24 hours after Perdomo's worst start as a big leaguer. He allowed nine runs (seven earned) over three innings in a 13-4 loss to the Dodgers on Wednesday. His ERA jumped to 8.36 in the process, and he's surrendered 26 hits in 14 innings on some very hard contact.

"We've done a lot to try to give him every opportunity to be successful at this level, and he's given the effort, man," Padres manager Andy Green said. "He cares. He's doing everything he possibly can. He's working hard. It's just not happening."
Perdomo's journey has been anything but orthodox. He joined the Padres via the 2015 Rule 5 Draft, having not pitched an inning above Class A Advanced. He was very impressive during the second half of the '16 season, but seemingly hasn't made strides since.
The club hopes a stint in Triple-A will help Perdomo address some of his issues -- most notably bettering the command of his power sinker.
In Perdomo's absence, the Padres have a vacancy in their rotation that needs to be filled by Tuesday in Colorado. Many have clamored for No. 12 prospect Eric Lauer, who is off to a strong start with El Paso. Lauer has a 3.00 ERA, a 0.94 WHIP and 19 strikeouts in 18 innings this season.

He's among the options being considered for that spot. But the club will grapple with the question of whether Lauer would be best served to begin his career at Coors Field.
Perhaps the likeliest option is left-hander Robbie Erlin, who took Perdomo's place in the rotation on Monday, while Perdomo was suspended for throwing behind Nolan Arenado last week.
Erlin was touched for six runs (four earned) over three innings by the Dodgers in that start, but he's been very sharp otherwise out of the bullpen this year.