Mariners Announce Nine Additional International Signings
SEATTLE – Seattle Mariners Senior Director of International Scouting Frankie Thon Jr. today announced the following international signings:
- Daniel Alana, C, Venezuela
- Cristian Alvarado, RHP, Mexico
- German Arvayo, RHP, Mexico
- Fabian Gonzalez, INF/OF, Venezuela
- Gabriel Hidalgo, RHP, Venezuela
- Carlos Martinez, RHP, Venezuela
- Santiago Pereira, C, Venezuela
- Edgardo Toro, INF/OF, Venezuela
- Adan Vallenilla, RHP, Venezuela
The following 5 players from the Dominican Republic were previously singed on January 15, 2026:
- Juan Rijo, OF
- Gregory Pio, OF
- Leonardo Reynoso, INF
- Jarvis Gomez, OF
- Ambeiro Recio, OF
“We're really happy to be able to compliment our international signings from last month with these nine players from Mexico and Venezuela,” Thon Jr. said. “This group provides an intriguing blend of young, high-upside position players, along with experienced pitchers who have shown advanced feel for their age. We're glad to be adding this level of talent to our minor league system.”
Below is a brief description from Thon Jr. on the nine signees:
Alana, 17, has a strong, thick 5-foot-11 frame with plus bat speed and plus raw strength with power that plays to all fields.
“Daniel Alana has that traditional mix of above-average raw power and arm strength that one tends to look for in a young Latin catcher,” Thon Jr. said.
Alvardo, 22, has a burly, 6-foot frame. He has mid-90’s velocity, with some late cut to the fastball. He also has pitching experience in both the Mexican summer league, as well as the Mexican winter league.
Arvayo, 19, is a plus athlete with a lean, wiry 5-foot-10 frame. He recently converted to the mound, and has less than 1 year of pitching experience. He has low-90’s fastball velocity.
Gonzalez, 17, is a left-handed hitting super utility player, who is a plus runner with solid hands on defense and a really aggressive style of play.
Hidalgo, 19, has a sturdy 6-foot frame. He is a strike-thrower with high-80’s to low-90’s velocity, along with sneaky ride.
Martinez, 18, has a muscular 6-foot frame with a mid-90s velocity and a really quick arm.
Pereira, 17, has a physical, athletic 5-foot-10 frame with an uphill, pull-oriented swing. He has above-average raw power and solid defensive tools.
Toro, 18, has a long-levered 6-foot-1 frame with borderline double-plus raw strength. Defensively, he profiles as more of a left fielder or first baseman.
Vallenilla, 20, has a lean, wiry 5-foot-11 frame with advanced control and command, along with really polished mechanics. He has a low-90’s velocity with the fastball. He is a potential starter with plus overall feel.
“Adan Vallenilla is someone we're pumped about,” Thon Jr. said. “It’s the athleticism, the way he moves, the ease of operation and how he commands the ball and the feel for his repertoire that excites us. He's one who should hit the ground running once his minor league career begins.”