Clearly both of these guys' best races they've ever run has been at 5000m. So why, instead of continually trying to run a good marathon, don't they concentrate on improving their 5k or 10k?
I think Jerry Schumacher is obsessed with the marathon and is wrecking these 2, along with Simon Bairu, Simon could have run on the Canadian team in the Olympics, but wrecked himself running slow marathons. Teg and Ritz ran fast as young runners, but have slowed down running average marathon times.
Why do these guys give up so quickly at 5000m and 10,000m. This training is not helping them become good marathoners, and is making them too slow to be affective at 5000 or 10,000.