400 to 60

Here`s a made up scenario…(question)
Is it possible for a 400m runner for ex Tyree Wh. to convert to run the 60m insted.
The thouhgt is can this be done if he put the training towards short-sprint, or is that ruined by all 500,600m and all other SE training the 400m runner has done during the years?
Could he challenge the other 60m people? :afro:

Look at what LaTasha Colander-Richardson is doing this season. A sub-50s quartermiler who is running low 11s and with the 2003 USA elite.