The 2013 MLB season has seen some fantastic performances, and while the likes of Miguel Cabrera and Clayton Kershaw putting up fantastic numbers does not come as much of a surprise, there have been some unexpected stars to this point as well.
One such player is Brewers shortstop Jean Segura, who recorded the first six-hit game since August, 11 2009 on Tuesday night, according to a tweet from ESPN Stats & Info.
What follows is a look at the seven most shocking breakout stars of 2013, including Segura. These guys have come out of nowhere to play a vital role in their team's early-season success.
It should be noted that not every breakout season is a surprise. Shelby Miller and Matt Moore are enjoying huge campaigns, but entered the season as two of the game's most highly regarded young arms. Chris Davis is also having a fantastic season, but he, too, enjoyed success last season when he hit 33 home runs.
Those are just a few examples of guys you won't find on this list, but here are the seven guys who do fit the bill of a "shocking breakout star" so far in 2013.
All WAR numbers courtesy of FanGraphs.