Opening Day is traditionally a time of boundless optimism, but the Seattle Mariners are starting their 2026 campaign by navigating immediate adversity. As the club finalized its 26-man roster ahead of the first pitch of the season, the front office confirmed that two cornerstone players, shortstop J.P. Crawford and starting pitcher Bryce Miller, will begin the year on the Injured List (IL). For a team with postseason aspirations in the competitive American League West, these absences represent a significant early-season hurdle for manager Dan Wilson and the rest of the squad.
Mariners J.P. Crawford and Bryce Miller Start Season on IL
The news that the Mariners J.P. Crawford and Bryce Miller start season on IL forced the organization to pivot quickly as they trimmed the roster to the league-mandated 26 players. Crawford, the emotional and defensive heartbeat of the infield, has been a model of consistency for Seattle. His ability to anchor the shortstop position while providing a disciplined approach at the top of the batting order is nearly impossible to replicate. Losing him on Opening Day leaves the Mariners without their primary vocal leader on the dirt to begin the 2026 season.
On the mound, the absence of Bryce Miller is equally impactful. Miller, who emerged as a vital component of Seattle’s high-octane rotation, was expected to provide stability and high-velocity strikeout potential in the middle of the staff. The Mariners have built their modern identity around a dominant starting five, and losing a piece of that foundation before the first game of the year tests the organizational philosophy of pitching depth. While the team has not specified the exact duration of these IL stints, the decision to sideline them now suggests a cautious approach aimed at ensuring both players are healthy for the long-haul grind of the summer months.
Roster Depth Tested as Mastrobuoni Also Sidelined
The injury bug has not limited its reach to Crawford and Miller. In a further blow to the team's utility depth, the Mariners confirmed that Miles Mastrobuoni will also start the season on the 10-day Injured List. Mastrobuoni is currently dealing with a right calf strain, an injury that removes a versatile left-handed bat from the bench just as the team needed it most.
With Dylan Moore also not included on the official 26-man roster released today, the Mariners’ middle infield looks significantly different than many projected during the early weeks of spring training. This series of roster moves has forced the front office to lean heavily on its younger talent to fill the gaps in the lineup and on the bench.
New Faces in the Infield: Bliss, Young, and Rivas
The hole left by J.P. Crawford at shortstop will be addressed through a combination of young, high-upside players. To bolster the middle infield in Crawford's absence, the Mariners have officially included Ryan Bliss and Cole Young on the Opening Day roster.
- Ryan Bliss: Known for his speed and defensive versatility, Bliss provides a dynamic option for Dan Wilson to utilize in late-game situations or as a spark plug at the bottom of the order.
- Cole Young: One of the organization's top prospects, Young’s inclusion signals the team's confidence in his advanced hit tool and poise. His development will be fast-tracked as he enters the Major League environment under the pressure of a division race.
- Leo Rivas: Rivas has secured his spot on the 26-man roster after a strong spring showing. His defensive range makes him a natural candidate to see innings at shortstop while the team waits for Crawford to return to full health.
Next Man Up: Emerson Hancock Joins the Rotation
With Bryce Miller unavailable to take his turn in the rotation, the Mariners have officially called upon internal depth to maintain the quality of their starting staff. Emerson Hancock has been officially tapped to fill the vacancy in the rotation. Hancock, a former first-round draft pick, has long been viewed as a high-upside arm who just needed a consistent opportunity at the Major League level.
Hancock showed flashes of the command and poise that made him a top prospect in previous stints, and he now finds himself thrust into a high-leverage role immediately. The Mariners will need him to provide quality innings to prevent an early-season tax on the bullpen. For Hancock, this is more than just a temporary assignment; it is an opportunity to solidify his place in the team's long-term plans alongside the likes of Luis Castillo and George Kirby.
Strategic Implications for the AL West Race
Despite the setbacks involving the Mariners J.P. Crawford and Bryce Miller start season on IL, the organization remains confident in its roster construction. The 26-man group that breaks camp is a mix of battle-tested veterans and hungry young talent. The next few weeks will serve as a litmus test for the Mariners' depth, as they look to stay afloat in the standings while their stars work their way back to health. Opening Day may look different than fans expected, but the goal remains the same: returning October baseball to the Pacific Northwest.
Sources & Original Reporting
