According to a Sound Ideas catalogue someone posted on YT (and unfortunately nowhere else): https://www.youtube.com/watch?v=Ra2GWBRz4cQ, "The Big League" was available on the original SI-D1 album, before Sound Ideas revised its production music catalog in 1994.
Here you go!hXXXs://mega.nz/file/Lg8BETYR#ugL0DqoQLQsJpfV_b4g242VjlD9J8n9tD4UpitOWjfEhXXXs://mega.nz/file/D0tiQJZA#6l7kCZXbtlPEghb1EX2xaTw6kRsmCpSKHl3Lnv2Sf_Q (Underscore Version)