Dodgers add Sergio Santos, option Mike Bolsinger to Triple-A, designate Xavier Cedeno.

Sergio Santos

Sergio Santos was able to opt out of his minor-league contract with the Dodgers May 1. (Associated Press photo)

SAN DIEGO — Xavier Cedeno, like Daniel Corcino, Ryan Dennick, Ryan Webb and David Huff before him, did not last long on the Dodgers’ 40-man roster. Cedeno, whom the Dodgers acquired from the Washington Nationals for cash considerations Wednesday, was designated for assignment Friday.

Sergio Santos has a fairly easy act to follow.

Santos, the veteran right-hander from Hacienda Heights, was added to the Dodgers’ 40-man roster and was brought up for tonight’s game against the Padres. He’ll wear number 26 and should be a fairly attractive bullpen option for Don Mattingly tonight. The Dodgers’ other relievers threw 10 ⅓ innings during the three-game series against the Giants that concluded Thursday, losing two games and blowing one save.

Mike Bolsinger, who started Thursday, was optioned to Triple-A Oklahoma City to make room for Santos on the 25-man roster. The Dodgers will carry eight relievers tonight and likely tomorrow, until they need a fifth starter to fill the “TBA” slot listed next to Sunday’s game in San Diego.

Santos last pitched Tuesday with a scoreless inning of relief against Nashville. He did not allow a run in five of his six appearances with Oklahoma City, posting a 3.86 earned-run average. The 31-year-old was a non-roster invitee in spring training and allowed seven runs (six earned) in 10 ⅔ innings in 11 games.

Santos has a 7-12 record with 39 saves and a 3.89 ERA in 180 games in five major league seasons with the White Sox (2010-11) and Blue Jays (2012-14). His minor league contract contained a May 1 opt-out date.

Bolsinger allowed one run on five hits in 5 ⅔ innings in a no-decision.