Line-Up (Also Hi-Jacked)

[rwest]

At our local FP Development School, I was told that a player is not legally out of the game if an illegal substitue is made. In the case where the FLEX hits for the DP without announcement, is the DP legally out of the game? I don't believe so. Therefore, when he came back in the game for the 2nd time, since he was never legally substituted for, then isn't he legal?

Another example we went over at the school was something like this....


Sub1 subs for the starting DP in the 3rd. In the 4th, the starting DP comes back in and Sub2 subs for B3. In the 5th, B3 comes back in. In the 6th, Sub2 subs for the DP. This is illegal. The DP can come back in because they were not legally out of the game when Sub2 subbed in for them.

Also, since the defense never appealed and brought it to your attention, would you consider that the DP had left the game twice? Can you go back and make that determination after several innings have elapsed?