Rangers Shortstop Corey Seager Diagnosed with Mild Concussion, Confirmed by Manager Skip Schumaker

Texas Rangers shortstop Corey Seager has missed three straight games with a mild concussion, manager Skip Schumaker confirmed Sunday night before the team faced the Boston Red Sox at Fenway Park. AP News reported that Schumaker described Seager as "definitely improving," saying the star had been hitting, throwing, and working in the weight room.
The injury stems from a collision at home plate on June 11, when Seager slid into Kansas City Royals catcher Carter Jensen. Seager stayed in that game and even hit his ninth home run of the season. But he woke up in Boston the next morning with jaw and rib pain — and soon, concussion symptoms.
Seager collided with Jensen during the June 11 series finale against Kansas City. He finished the game with two hits, masking any signs of a head injury. Lufkin Daily News reported that symptoms only appeared the following morning, when the Rangers had already arrived in Boston for their next series.
The Rangers first listed Seager as day-to-day with jaw and rib pain on Friday, June 12. By Sunday, Schumaker upgraded the diagnosis to "mild concussion." The two-day gap between those explanations drew questions from local reporters about how quickly the team disclosed the head injury.
Manager Skip Schumaker said before Sunday's game, "It feels like we're getting closer." He stressed that Seager is going through all physical activities without setbacks. The Star noted that Schumaker has been the team's main voice on Seager's health all weekend.
MLB's concussion rules require players to pass a multi-step return-to-play protocol. That process includes exertion tests and brain function checks before a player can suit up again. If Seager is not cleared by Tuesday, June 16, the Rangers could place him on the 10-day injured list.
This is not Seager's first health scare in 2026. He already missed 19 games earlier this season due to lower back inflammation. He had only been back in the lineup for about one week before the home-plate collision happened. His batting average sat at .186 at the time of the injury — a career low.
Seager, 32, is in the middle of a 10-year, $325 million contract that runs through 2031. Each game he misses costs the Rangers roughly $200,000 of that deal. More importantly, the Rangers are already thin. Outfielder Evan Carter is out with an oblique strain, and his replacement Michael Helman broke a finger days before Seager got hurt.
Without Seager in the lineup, the Rangers lose their top power hitter. He has nine home runs this season despite battling injuries all year. Texas is already fighting to keep pace with the Houston Astros and Seattle Mariners in the American League West. SWOKNews reported the Rangers faced the Red Sox shorthanded on Sunday night.
New manager Skip Schumaker, hired in October 2025, is under scrutiny for how he handles this injury wave. Analysts have pointed out that Seager's low batting average may partly reflect the lingering effects of his back issues earlier this spring. Getting him healthy — and keeping him healthy — is now the Rangers' top priority.
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