The Seager sibling rivalry Posted Jul 16, 2015 While Kyle Seager got four years and a partial to amass his age-27 cumulative MLB stats, Corey could get as many as six and a partial if he comes up this year and doesn't get injured or long-term demoted. Start to parse debut years/months, and you're making for small sample sizes and mixing in a confounding but important variable of prospect status that we'll get to later. (FOX Sports)