NBA 2K8
50 Achievements
1000
Xbox 360
Online League Game
Achieved by completing an online league game.
15
How to unlock the Online League Game achievement in NBA 2K8 - Definitive Guide
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TrueAchievements
TrueAchievements
Due to the XBox Live Game Modes no longer available on the 2K servers, this achievement is no longer possible. You can still get the 'Ranked Wins' achievements but not the league/tournament ones.
killlah631
All you need to do is join an online league and complete a game in it, win or lose.