I worked at a youth league today that uses modified NCAA rules. Here's the play: 1st and 10 from the A40. A23 takes a handoff and scores a touchdown. During the run, there's a UNR against A50 at the B38. The foul was obviously during the run, not a dead ball foul. We marked off 15 yards from the spot of the foul which puts us at the A47. The question becomes this: Is it 1st and 3 replaying the down, or does A get a new series 1st and 10? I said that because A was left behind the line to gain after penalty enforcement it is still the same series, therefore 1st and 3. The white hat says that, because the foul occurred beyond the line to gain and after the runner reached the line to gain, A gets a new series 1st and 10 at the A47. So who is buying the drinks next week?