Mets get brutal 4-6 week injury news on Marcus Semien

The New York Mets have received difficult injury news regarding infielder Marcus Semien, who is expected to miss 4 to 6 weeks. The timeline represents a significant blow to the Mets' roster, though specific details about the nature of the injury were not provided in the excerpt. Semien's absence will likely impact the team's lineup and performance during that period.