The term appears to be a specific file name rather than a public production. Depending on where you encountered it, it likely refers to one of the following:
To help you properly, could you please clarify: MLBSFans Part 2 mp4
If you thought Part 1 was legendary, the sequel just raised the bar. From the electric atmospheres in the stands to the raw, unfiltered passion that makes this game beautiful—this one hits different. The term appears to be a specific file