In 2017, a lot of the teams everyone expected to be top teams went on to unsurprisingly win their divisions. Nobody looked at the Dodgers-Astros World Series and rhetorically asked, "Who woulda thunk it?" But teams such as the Diamondbacks, Rockies and Twins were surprises for many, and those stories tend to be the most fun.
So, who are 2018's stealth contenders who can go on a deep run into playoff contention if enough realistic things go right? I'm not talking about teams we're certain will be good; if we know it's coming, it's not exactly that stealthy, is it? Who could be 2018's version of the Twins?