That's just how Buzzerbeater is sometimes.
At least you weren't involved in this game. One guy gets hurt and your team can't score all of a sudden and then you lose on a last second buzzer beater.
(http://www.buzzerbeater.com/match/72413172/boxscore.aspx)
Or this one (which worked out well for me), which was actually in the playoffs...
(68832440)To sum it up, his C fouled out at 7:50, but injured my center on the play. When it happened, I was down 68-54. The last 7:50 without the two centers I outscored them 37-11.