I have done quite a bit of subbing in tournaments on BBO over the past few months and have experienced two puzzling situations, always in a tournament with an entry fee with BBO points and/or cash prizes: Situation 1. I come into a 6 hand tournament after hand two; bid and play the remaining 4 hands and am doing quite well. After completing Hand 6, I was (as usual) automatically moved to the lobby. Message pops up that the original player has returned and that I am no longer part of the tournment. I did all the work. What is the rule for subs in this situation. At what point does the original play lose his seat? Situation 2. Again in a paying tournment and ALWAYS when I am doing well: while playing the very last board I receive a message that I am no longer playing in the tournment, no explanation provided. Why? I have no idea what is going on here: Software glitch? Someone replacing me with a friend to reap the rewards of my work? Could someone please clarify what subs should expect. If you look at my completion rate, it is relatively high. I sub fully understanding that I can't chose my partner and may not complete the game. But the two situations described above are very discouraging.