The Mets have made many costly free agent mistakes over the years. At the time, signing Jason Bay, Bobby Bonilla and others seemed like a good idea. They had a track record of success, were still in their prime and coming off a good year. Hindsight is 20/20 so it’s easy to now point to the warning signs. Who in this year’s free agent class do you think should be red flagged? For me it’s A.J. Pollock. There are just too many recent examples of center fielders not aging well – Grady Sizemore, Jacoby Ellsbury, Carlos Gomez, Dexter Fowler, et al. Some, like former Mets Carlos Beltran and Curtis Granderson, and Yankee Brett Gardner, can find longevity in a corner OF spot. Odds are, this is where Mike Trout will be down the road. The 35-year-old center fielder has gone the way of the $3 stadium beer.