Mets GM Introduces New Second Baseman Marcus Semien, Repeats Offseason GoalsSome GMs dance around whatever roster issues come up when they introduce a shiny new player after an important trade, but that’s not New York Mets GM David Stearns. He just acquired second baseman Marcus Semien from the Texas Rangers, but he had to give up outfielder Brandon Nimmo to do it.Â
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