ROTTERDAM, Netherlands-- Heerenveen coach Jan de Jonge has stepped down after a series of disappointing results, the Dutch club said on their official website on Wednesday.
The club appointed De Jonge, who was head of the club's youth set up, in September 2009 after Trond Sollied was sacked.
"It didn't work out, that is why I gave back the assignment to the board," De Jonge was quoted as saying.
Heerenveen suffered their 13th league defeat of the season on Tuesday, losing 3-1 at VVV Venlo, and are 13th in the 18-team league with 20 points after 21 matches.
