Who's coming for the Twins? Pretty much anyone not being KC. Though, I don't really consider Detroit to be a serious threat, they're still within shouting distance. And that's the problem. Despite being in a putrid division and opportunities to pull away, they haven't. So largely, it probably comes down to who is most healthy and playing decent enough ball at the right times to take a slim lead in the division come October 1st.
It should make for an exciting second half of the season, but the baseball may not be pretty.