Seager will undergo surgery on a tendon in his left hand Tuesday and will miss at least the first month of the season, Greg Johns of MLB.com reports.

EDGE Analysis

Seager suffered the injury while diving to make a catch Friday against the Cubs. An exact timeline has yet to be determined, but he'll be back no sooner than early May. In his absence, the Mariners could start Tim Beckham or move Ryon Healy to third base, opening up first base for Jay Bruce.

Early indications are that Seager (wrist) will open the year on the injured list, Greg Johns of MLB.com reports.

EDGE Analysis

The team is still expected to give a thorough breakdown of the injury and timetable Monday, but Johns expects the injury to sideline Seager into the regular season, despite the initial X-rays being negative. Ryon Healy has been getting time at third base and could be the primary option there while Seager is on the shelf.

Seager (wrist) was held out of Sunday's Cactus League game against the Indians and the team is expected to provide an update on his status Monday, Greg Johns of MLB.com reports. "The X-rays were negative, so we're hoping for the best -- hoping it's nothing too serious," manager Scott Servais said. "But hands are tricky, especially in our game -- how important [they are]. We'll have to wait and see. We're just trying to immobilize it, get the swelling down. He's got it wrapped up, so he won't do anything on the field today."

EDGE Analysis

Seager hurt the wrist Friday versus the Cubs on a dive down the line, and he was slated to see hand specialist over the weekend. The Mariners are expected to divulge the results of that examination at some point Monday, but Johns reports that early indications are Seager could be headed to the injured list for a "fairly significant amount of time." Ryon Healy was auditioned at third base in both of the team's weekend games and could be the leading candidate to replace Seager in the event of any absence.

X-rays on Seager's injured left thumb returned negative Saturday, Ryan Divish of The Seattle Times reports.

EDGE Analysis

While Seager avoided any structural damage to the digit, he'll still meet with a specialist in Arizona this weekend in order to gain more clarity on the extent of his injury. He was spotted with a wrap on his glove hand Saturday and may not return to the Cactus League for a few days even if he receives encouraging news from his meeting with a doctor.

Seager was removed from Friday's game against the Cubs after suffering an injury to his left thumb on a diving attempt in the field, Ryan Divish of The Seattle Times reports.

EDGE Analysis

Seager insisted that his thumb is fine shortly after the play, per Shannon Drayer of 710 ESPN Seattle, although the team will likely run some tests as a precaution.

Seager isn't in Friday's starting nine against the Rangers, Greg Johns of MLB.com reports.

EDGE Analysis

With the Mariners out of postseason contention, Seager will get the day off. Kris Negron draws the start at the hot corner and is slated to bat ninth.

Seager, whose current .220 average and .273 slugging percentage are both career lows, has been significantly affected by infield shifts this season, David Gottlieb of MLB.com reports.

EDGE Analysis

The veteran third baseman has been a model of consistency throughout his career, and his home run (22) and RBI (77) totals this season are both within his normal standards. However, he's made a lot more outs than he accustomed to, as partly evidenced by career-worst strikeout (21.8 percent) and walk rates (6.0). In the opinion of manager Scott Servais, Seager was undoubtedly affected by a June toe fracture, but the uptick in infield shifts has also left him at a significant disadvantage, given his heavy pull tendencies as a hitter. Seager had seen a shift in a team-high 70.4 percent of his plate appearances and a 40-point decrease in his batting average against such an alignment heading into Thursday's game against the Rangers, underscoring it as an aspect of his game to address this offseason.

Seager entered an extra-innings win over the Athletics on Tuesday as a pinch hitter and laced a game-tying RBI single in his one at-bat.

EDGE Analysis

It was a night of pinch-hit success for the Mariners as a whole, with Seager making a key contribution by lacing a 2-1 pitch with two outs in the ninth to bring home Ben Gamel with the tying run. The veteran third baseman has a disappointing season in terms of his slash line (.221/.273/.401), but he's shown some signs of life recently by reaching safely in 12 of his last 14 games.

Seager is not in the lineup Tuesday against the A's.

EDGE Analysis

Seager will head to the bench as manager Scott Servais stacks right-handed hitters against southpaw Brett Anderson. In his place, Kris Negron will start at the hot corner and hit sixth.

Seager went 2-for-4 with a walk and a run in a win over the Astros on Monday.

EDGE Analysis

Seager is in the midst of one of his more consistent offensive stretches of the season, as he's now hit safely in seven consecutive games. The slugging third baseman has four extra-base hits (three doubles, one home run) during that span and has his September average to .250, an unspectacular number that nevertheless represents a significant improvement over the .183 figure he generated in August.