Murphy has worked very hard to become a good defensive second baseman. He has battled knee problems, and the presence of other players, among other aspects to get to where he currently is.
Murphy's hitting has never been the issue. In his first three full seasons (2009, 2011-2012), Murphy has put together a .292 average, 24 home runs and 177 RBI. This includes a .320 average and .362 OBP in 2011, which has been his best offensive season so far.
Murphy, though, stayed healthy for all of 2012 and played in 156 games. It was certainly an encouraging sign that Murphy's defense had improved a lot, and that he can possibly become an elite second baseman in a very short amount of time.
Here are three reasons why Murphy will continue to improve as a player.