Round Four - Overtime:
custardchuk: SRRRPSS - SS
James Hagherty: SSRRSSP - SP
Score one for Murphy. Congratulations to custardchuk who will advance to the semi-finals.
To clarify Chuk's question about changing throws: Once a throw is submitted (via e-mail, bullboard, etc.), throws are considered "final" just as in delivery of a final prime in live play.
The only exception is in the antiquated case of match via trained courier animal (usually pigeons) which has an elaborate codex clarifying the protocol of resubmits in the event that some (or all) of the courier animals did not reach their targets with messages intact. Even in this case where the rules to not specifically disallow altering resubmitted throws it was considered bad-form to re-try the submission with anything other than a message identical to that first sent.
Since such matches have not been in vogue for some time, it's safe to say that "a throw played, is a throw played".