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On YouTubeSeattle Mariners News / MLB Trade Rumors / May 29
Mariners select Casey Lawrence for fifth time this season
The Mariners have again selected Casey Lawrence onto the MLB roster. They optioned rookie righty Blas Castano to Triple-A Tacoma while designating catcher Blake Hunt for assignment in corresponding moves.
Seattle Mariners News / Seattle Mariners on SI / May 23
Seattle Mariners Officially Bring Minor League Pitcher onto Roster, Designate Vet For Assignment
FRIDAY, 2:20 p.m. PT: Castano has officially been called up, with Hahn being designated for assignment. FRIDAY AM: According to a report from insider Francys Romero, the Seattle Mariners are set to promote minor league pitcher Blas Castano to the big-league roster.
The '2023 MLB home run leaders' quiz
During the 2023 MLB season, 29 players hit 30 or more home runs. How many can you name in five minutes?
The 20 most notorious gaffes and blunders in MLB history
From errors to blooper to unfortunate mistakes, here are 20 notable Major League Baseball plays gone wrong, listed in chronological order.
Seattle Mariners News / MLB Trade Rumors / May 23
Mariners to promote 26-year-old righty
The Mariners are recalling right-hander Blas Castano from Triple-A Tacoma, reports Francys Romero of BeisbolFR.com. The 26-year-old righty will be making his MLB debut when he first takes the mound.
Seattle Mariners News / Lookout Landing / March 12
40 in 40 2025: Blas Castano 
We always root for a debut Blas Castano is the rare entrant in this year’s 40 in 40 series for whom you might need an introduction, so let’s start with some basic biography.
Seattle Mariners News / Seattle Mariners on SI / November 5
Seattle Mariners Add Intriguing Pitcher to 40-Man Roster in Monday Move
The Seattle Mariners 40-man roster is now completely full. Monday marked the deadline for several different kinds of transactions for MLB teams. It was
Seattle Mariners News / Lookout Landing / November 4
RHPs Blas Castano & Matt Brash added to 40-man amidst a handful of Mariners roster moves
Seattle activated three players off the IL alongside Clastano to fill the 40-man roster at 40. The Seattle Mariners announced today that they have selected RHP Blas Castano from Triple-A Tacoma and added him to their 40-man roster.
Seattle Mariners News / MLB Trade Rumors / November 4
Mariners Select Blas Castano
The Mariners announced they’ve added righty Blas Castano to their 40-man roster. As a player with parts of seven seasons in the minors, he would’ve otherwise qualified for minor league free agency.
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