I certainly thought his retiring deserved more than one line in an IAAF sorty. Maase ran at the Univ or Texas in the 1990s and went on to have a great career. He's certainly one of the fastest runners in history to every= come out of the NCAA (and one of the fastest white guys in history).
His pbs of 13:13.06, 27:26.29, and 2:08:21 all are Dutch records and compare favorably to someone like Alan Culpepper. He won a silver at the 2001 European XC meet and was 8th at the 2003 worlds in the 10k.
Maase's homepage is here: http://www.kamielmaase.com/races.php
IAAF article with mention of his retirement here: