| Win | 1–0 | [1999 SEAT Open Luxembourg – Singles|] | Luxembourg Open, Luxembourg | Tier III | Carpet | dts|Oct 1999
Doubles: 20 (11 titles, 9 runner-ups)| Result | W–L | Date | Tournament | Tier | Surface | Partner | Opponents | Score | | Win | 1–0 | [1999 Eurotel Slovak Indoor – Doubles|] | Bratislava Open, Slovakia | Tier V | Hard | 
ITF Circuit finalsSingles: 4 (3 titles, 1 runner-up)| Result | W–L | Date | Tournament | Tier | Surface | Opponent | Score | | Win | 1. | Jun 1998 | ITF Brussels, Belgium | 10,000 | Clay | 
Doubles: 3 titles| Result | W–L | Date | Tournament | Tier | Surface | Partner | Opponents | Score | | Win | 1. | Jul 1998 | ITF Brussels, Belgium | 10,000 | Clay | 
WTA Tour career earnings*As of October 10, 2021
- Clijsters has a record against players who were, at the time the match was played, ranked in the top 10.
| Season | 1999 | 2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 | 2012 | 2020 | Total | | Wins | 1 | 7 | 3 | 12 | 21 | 1 | 13 | 6 | 1 | 0 | 5 | 10 | 2 | 2 | 0 | 84 |
|
|
|
|