That is an interesting example Larry.

While Myriokephalon is significant for the reasons you mention — I think that the Byzantines could have still turned things around from here.

All it arrested was the re-capture of Anatolia proper.

For example, the Battle of Hyelion and Leimocheir in the following year showed that they were still a force to be reckoned with and capable of expelling the Turkish invaders.