Whether it's a revolving cast of characters or a few who can't get the job done, every team has an area weighing it down. Which have hurt the worst?
2017 ScheduleAll times ET
The Mariners didn't make any big splashes this winter, but bringing in Jean Segura and others makes them a safe bet to improve.
Andrew Benintendi and Dansby Swanson have already produced in the majors, but they're not the only prospects who can help their clubs this season.
Felix Hernandez, ahead of his usual spring training schedule due to his World Baseball Classic commitment, is focused on bouncing back from a rocky and injury-plagued 2016 campaign.
Vogelbach heads to camp with a prime chance to win the heavier part of a first-base platoon with veteran Danny Valencia.
Invitations to camp can mean first glances for prospects and last chances for veterans like Josh Hamilton. Who should be on your spring scorecard?
Several big-name players struggled in 2016, but with spring training just around the corner, it's time to predict who will return to form in 2017 and have the best comeback season.
He's been with the Mariners and Phillies, and with the Cubs and Rangers twice apiece -- all since Nov. 18. Now, as spring training nears, the journeyman lefty waits in baseball limbo once again.
The Tampa Bay Rays have acquired catcher Jesus Sucre from the Seattle Mariners for a player to be named or cash.
Are the Cubs positioned to repeat, or is another contender ready to steal the crown? We examine where MLB's elite stand heading into 2017.
A mega-deal involving an ace? Both teams get an A. Whiff badly as one AL Central team did? That's an F. Here's our hot stove report card for 2017.
James Paxton saw his average fastball speed rise from 94.2 mph in 2015 to 96.8 in 2016. After undergoing a mechanical change, he has a much smoother delivery that translates into more strikes and a higher velocity.
With many high picks not panning out and other prospects being traded, the Mariners' system, with only one player in the top 100, is on the downswing.
Dustin Pedroia getting down and dirty. Trea Turner's speed. Nelson Cruz's power. Put those all together and there's a lot to be excited about in 2017.
Projection is key for Nick Neidert
Depending on how he develops physically, the right-hander could get his fastball up to the mid-90s. That would give him the chance to potentially be a No. 3 starter, Keith Law writes. Top sleeper prospects (Insider)
Thanks to their depth throughout the minors, the Astros have the best farm system in a division that easily has the weakest collection of prospects in baseball.
The Mariners have made left-handed pitcher Nick Hagadone their 23rd invite to spring training.
The Mariners announced seven non-roster invites for spring training, including the team's No. 2 prospect, outfielder Tyler O'Neill.
Iwakuma has much to prove this year
Hisashi Iwakuma has a $10 million team option for 2018, but red flags in his medicals with the Dodgers last year could surface and worry the Mariners, David Schoenfield writes. The 35-year-old made 33 starts in 2016. MLB players motivated for next contract
Trading Seth Smith for Yovani Gallardo wasn't GM Jerry Dipoto's splashiest move, but it did show the Mariners are serious about becoming better defensively in the outfield next season.
Pushing for another playoff spot this season could spell disaster in the future for the Tigers, Mariners and Orioles.
The Mariners acquired lefty Dillon Overton on Thursday from the Athletics and sent minor league catcher Jason Goldstein to Oakland.
Seattle's Felix Hernandez was robbed of an MLB All-Star ring and a diamond watch engraved with his nickname, "King Felix." One of the suspects was wearing the watch when he was arrested.
King Felix is under pressure
In a more competitive AL West, the Seattle Mariners need the 31-year-old Felix Hernandez to still be able to lead their pitching staff, Buster Olney writes. Who's under pressure in 2017? (Insider)
Impactado Robinson Canó por fallecimiento de Yordano Ventura
El segunda base de los Marineros de Seattle se mostró visiblemente afectado por la muerte del lanzador dominicano. Mirar