Take-Two Interactive has been erasing the MLB 2K series from existence, Pasta Padre reports. The baseball games have been removed from 2K's website, MLB 2K10 through 2K12 have been removed from Steam, MLB 2K13's website is gone, and so on.
When Sony teased MLB 14: The Show, it boasted it would be the only major league baseball game available on next-gen consoles. It seems it will be the only MLB game in general (PS3, Vita, PS4). Polygon reached out to 2K and confirmed the series' conclusion:
"We have decided not to renew our MLB 2K series for 2014. We are very proud of the achievements made by the MLB 2K team and look forward to their contributions to our future titles, including NBA 2K -- our industry's #1 rated and #1 selling basketball franchise."
Given how half-assed and not good MLB 2K is -- the slapdash MLB 2K13 is basically a roster update -- this isn't bad news. Lack of competition for MLB The Show could see that franchise fall into complacency, but Visual Concepts folding more resources into NBA 2K seems like the right move.