yeah - it's best player at each position over the next 9 years. Doesn't mean you have to still be playing that position (or at all) in 2020. But when looking back, who will people think were the best player over the 2010s. It's actually a decent read if you like Neyer (link). In an earlier post, he also mocks his complete failure at this exact exercise before the 2000s. Mauer is his choice, with McCann, Posey, Wieters and "Suzuki or one of the prospects" rounding out the top 5. He admitted in the comments that he sort of forgot about Santana, but doesn't think anyone can really challenge Mauer since he'll be so good over the next several years that none of the prospects will catch him. Personally, I think McCann could if he stays healthy but the Twins have been careful with Mauer, so maybe he'll catch long enough to be the best of the decade.