Catchers: The Tacoma Rainiers right now have two catchers on their roster. David Freitas and Chris Herrmann both spent time in Tacoma well as the Mariners backup catcher during the 2018 season. They should both be competing for the spot again behind Mike Zunino. A lot depends whether general manager can pick up another catcher during the off-season.
Alexander Capriata: assigned to Tacoma on September 20 2018. Saw no action in 2018. Not sure what the Mariners are expecting out of him next season.
Cameron Rupp: a veteran catcher who spent time in the major leagues with the Philadelphia Phillies. Showed some decent power having 16 home runs with the Phillies in 2016 and 14 in 2017; his batting average anything to brag about. He was released by the Phillies at the end of spring training of 2018. He spent time in the Texas Rangers and Minnesota systems before signing with the Mariners on a minor league contract on July 14. The Mariners have assigned right now to Tacoma; he has the most experience right now. He might start the season with the Rainiers.
Infield: the Rainiers right now have five players assigned to them for the infield. They are top heavy with three shown as second baseman while one at first base and the other third base. So they are looking for a shortstop at this point.
Cal Hernandez: drafted this year by the Seattle Mariners out of Oral Roberts University in the 26. He was assigned to the Mariners Arizona rookie team on June 18. He is listed on the roster as a second baseman however played third base in college. Though shown on the Rainiers roster I expect he will be single A next season. Have more on him at a later date.
Adam Law: He played some second base for the Tacoma Rainiers well as third baseman. He started the season at double A before going up to triple A. He was drafted in the 12th round by the Los Angeles Dodgers. The Mariners acquired him July 2016.Both his father Vance Law and grandfather Vernon Law played in the major leagues. We will have to wait and see whether Adam will make the major leagues or not. He batted .260 with the Rainiers in his time with the team. With his versatility he looks like a utility player in the future if he does make the major leagues. I am sure he will start 2019 at Tacoma.
Seth Mejias-Bean: Here is another player the Mariners picked up they didn’t draft. He was taken in the 8th round by Cincinnati Reds in 2012. He too spent time in double A for the Mariners before coming to Tacoma. He played in 96 games with a batting average of .266 however he has marginal power as well. Like Law might make it as a utility player too.
Danny Muno: He is another minor leaguer the Mariners signed and he is a little older than the previous two. He spent some of 2018 on the disabled list so he only played in 61 games. He is a career minor league so he doesn’t seem to have a future in the major leagues. Not sure to whether he will stick with the Rainiers either. I certainly would look to find other players if the Mariners actually build on the Rainier team.
Cameron Perkins: he is listed as a first baseman however before the Mariners acquired him from the Philadelphia Phillies in 2017 he played the outfield. He spent some of the year on the disabled list though he did play in 94 games with a .257 batting average. He had limited action in the major leagues primarily with the Phillies so pretty much a career minor leaguer. He is another one that would be border line for the Mariners to keep.
Outfield: current listed three players on the roster.
Andrew Aplin: a left handed hitting outfielder. He started the season in double A went on the disabled list. He came to the Rainiers in June batting .265 in 63 games driving in 31 runs. Hasn’t hit a lot of home runs in his career; interesting he walked 31 times as well. His career shows he walks and drives in runs about the same. He was drafted in 2012 in the 5th round by the Houston Astros however never has played in the major leagues. He likely will be in the outfield for the Rainiers again this year.
Ian Miller: one player that was drafted by the Mariners in the 14th round in 2013. He played a full season at Tacoma in 2018 after spending some of the year 2017 in double A before moving up to Tacoma. He batted .261 however had a .333 on base percentage because he walked 45 times. He has been known for his speed stealing bases. In Tacoma he had 33 stolen bases. Right now he is playing for the Mariners team in the Arizona Fall League and he is listed as the Mariners number 20 prospect. Not sure he will make the big club however if he does probably as a fourth or fifth outfielder. This will be a key year coming for Ian how his future goes. He could be involved in a trade the Mariners make this off-season as well.
Sebastian Ochoa: a right handed bat and thrower the Mariners signed to a minor league contract in 2016. He spent first two years on the Mariners Dominican Summer League team. In 2018 he spent most of the year in the Arizona Rookie League. He was assigned to Tacoma on August 28. He is only 20 years old so I expect the Mariners will probably send him to one of the single A teams when 2019 season.
Currently the Rainiers have 20 players on their roster so they have room for six more. Not only could they add these six more may add more than that and remove some of these players already on the roster. We will have to see.
Next will be the Pitchers on the Rainiers roster at this time