Second base has been a thin position for the Oakland A’s over the last decade.
In 2011 it looked like Jemile Weeks might be the answer, but he didn’t pan out long-term. During their 2012-14 postseason run it was a specific area of weakness, with Eric Sogard doing his best to adequately fill it alongside various platoon partners. They rented Ben Zobrist in 2015 but he only played 34 games at 2B before being traded away.
In 2016 Jed Lowrie moved over from shortstop, and from 2017-18 he was excellent, but then he left and the keystone was exposed anew.