ANAHEIM -- Third baseman Alex Liddi and right-handed reliever Steve Delabar were promoted from Triple-A Tacoma along with outfielder Michael Saunders on Monday night and all three will join the Mariners on Tuesday in Anaheim.
Liddi and Delabar will be making their Major League debuts and will become the 17th and 18th rookies to play for the Mariners this season once they make their first appearances. Along with Saunders, their additions give Seattle 15 rookies of the 31 players on the roster.
Delabar, 28, will have to be added to the 40-man roster. A corresponding roster move will be announced Tuesday.
Liddi, 23, will become the first player born and raised in Italy to play in the Major Leagues. He led the Pacific Coast League with 121 runs scored this season and became just the second player in Tacoma history to combine 100 runs and 100 RBIs in the same season.
In 138 games with Tacoma he hit .259 with 32 doubles and 30 home runs.
Saunders, 24, will rejoin the Mariners for the second time this season and figures to provide needed backup in center field, where the club lost Franklin Gutierrez to a severe oblique strain in his side on Sunday.
Saunders hit .288 with 51 runs, seven home runs, 38 RBIs and an .864 on-base plus slugging percentage (OPS) in 61 games. He was on the Mariners Opening Day roster and appeared in 45 games, batting .168 while serving as the primary center fielder.
Delabar is the surprising addition among the trio. The 28-year-old reliever is a former Independent League pitcher who went 3-5 with a 2.25 ERA while splitting this season between Class A High Desert, Double-A Jackson and Triple-A Tacoma.
He was 1-1 with an 0.69 ERA with 18 strikeouts in 13 innings with Tacoma. Delabar was signed as a Minor League free agent on April 20 after not pitching in 2010. He pitched two seasons in independent leagues in 2008-09 after spending five seasons in the Padres organization.
Mariners manager Eric Wedge said those would likely be the last players promoted from Tacoma, whose season ended Monday, though reliever Dan Cortes was also with the Rainiers on an injury rehab stint and is expected to be brought off the 15-day disabled list later this week.