With the Rockies demoting Josh Rutledge on Wednesday, DJ LeMahieu is expected to take over the starting second base job. Owned in six percent of leagues, it might benefit an owner in a deeper format to take a closer look at the 24-year-old.
LeMahieu has never hit below .314 in any of his five minor league campaigns (he has a .321 career minor league BA). In 306 major league at-bats, he has a .294 average. I wouldn't expect much in the way of power or speed from LeMahieu, but 20 doubles the rest of the way (assuming he gets regular at-bats) wouldn't be out of the question, and you can pretty much bank on the average to be there.
In NL-only, he's a must-add. But I would consider adding him in formats as shallow as 15-team Roto leagues (at MI or UT), based on his promise in batting average.