| 1998-12-19 | PSV EindhovenvWillem IIEredivisie · Netherlands | 1–0 | Eredivisie · Netherlands |
| 1998-12-12 | Willem IIvNijmegenEredivisie · Netherlands | 1–0 | Eredivisie · Netherlands |
| 1998-12-04 | Willem IIvVitesseEredivisie · Netherlands | 3–5 | Eredivisie · Netherlands |
| 1998-11-29 | UtrechtvWillem IIEredivisie · Netherlands | 2–0 | Eredivisie · Netherlands |
| 1998-11-21 | TwentevWillem IIEredivisie · Netherlands | 5–1 | Eredivisie · Netherlands |
| 1998-11-15 | Willem IIvNAC BredaEredivisie · Netherlands | 2–1 | Eredivisie · Netherlands |
| 1998-11-11 | Willem IIvWaalwijkEredivisie · Netherlands | 3–0 | Eredivisie · Netherlands |
| 1998-11-07 | GraafschapvWillem IIEredivisie · Netherlands | 2–2 | Eredivisie · Netherlands |
| 1998-10-31 | MVV MaastrichtvWillem IIEredivisie · Netherlands | 1–1 | Eredivisie · Netherlands |
| 1998-10-25 | Willem IIvPSV EindhovenEredivisie · Netherlands | 4–2 | Eredivisie · Netherlands |
| 1998-10-17 | VitessevWillem IIEredivisie · Netherlands | 3–2 | Eredivisie · Netherlands |
| 1998-10-03 | Willem IIvRoda JCEredivisie · Netherlands | 1–2 | Eredivisie · Netherlands |
| 1998-09-26 | FeyenoordvWillem IIEredivisie · Netherlands | 3–2 | Eredivisie · Netherlands |
| 1998-09-23 | Willem IIvCambuurEredivisie · Netherlands | 2–1 | Eredivisie · Netherlands |
| 1998-09-19 | AZ AlkmaarvWillem IIEredivisie · Netherlands | 1–1 | Eredivisie · Netherlands |
| 1998-09-12 | Willem IIvSpartaEredivisie · Netherlands | 3–2 | Eredivisie · Netherlands |
| 1998-09-08 | HeerenveenvWillem IIEredivisie · Netherlands | 2–2 | Eredivisie · Netherlands |
| 1998-08-29 | Willem IIvFor SittardEredivisie · Netherlands | 1–0 | Eredivisie · Netherlands |
| 1998-08-23 | AjaxvWillem IIEredivisie · Netherlands | 2–0 | Eredivisie · Netherlands |
| 1998-05-10 | Willem IIvSpartaEredivisie · Netherlands | 3–0 | Eredivisie · Netherlands |
| 1998-05-03 | Willem IIvRoda JCEredivisie · Netherlands | 2–4 | Eredivisie · Netherlands |
| 1998-04-26 | WaalwijkvWillem IIEredivisie · Netherlands | 1–4 | Eredivisie · Netherlands |
| 1998-04-23 | AjaxvWillem IIEredivisie · Netherlands | 6–1 | Eredivisie · Netherlands |
| 1998-04-18 | Willem IIvHeerenveenEredivisie · Netherlands | 5–2 | Eredivisie · Netherlands |
| 1998-04-08 | TwentevWillem IIEredivisie · Netherlands | 2–0 | Eredivisie · Netherlands |
| 1998-03-29 | Willem IIvUtrechtEredivisie · Netherlands | 3–2 | Eredivisie · Netherlands |
| 1998-03-25 | Willem IIvGroningenEredivisie · Netherlands | 4–2 | Eredivisie · Netherlands |
| 1998-03-21 | Willem IIvMVV MaastrichtEredivisie · Netherlands | 2–0 | Eredivisie · Netherlands |
| 1998-03-13 | HeerenveenvWillem IIEredivisie · Netherlands | 1–3 | Eredivisie · Netherlands |
| 1998-03-07 | Willem IIvGraafschapEredivisie · Netherlands | 1–1 | Eredivisie · Netherlands |
| 1998-03-01 | VolendamvWillem IIEredivisie · Netherlands | 4–1 | Eredivisie · Netherlands |
| 1998-02-13 | For SittardvWillem IIEredivisie · Netherlands | 2–1 | Eredivisie · Netherlands |
| 1998-02-07 | Willem IIvVitesseEredivisie · Netherlands | 1–0 | Eredivisie · Netherlands |