| Allison Fisher defeated Helena Thornfeldt |
1998 Ultimate Challenge 9-Ball |
| Joanne Parker defeated Helena Thornfeldt |
1999 Ultimate Challenge 9-Ball |
| Gerda Hofstatter defeated Helena Thornfeldt |
1999 Ultimate Challenge 9-Ball |
| Ga Young Kim defeated Helena Thornfeldt |
2009 WPBA U.S. Open 9-Ball |
| Helena Thornfeldt defeated Suzanne Peters |
2019 WPBA Masters 9-Ball |
| Helena Thornfeldt defeated Jessica Barnes |
2019 WPBA Masters 9-Ball |
| Helena Thornfeldt defeated Monica Webb |
2019 WPBA Masters 9-Ball |
| Helena Thornfeldt defeated Jia Li |
2019 WPBA Masters 9-Ball |
| Helena Thornfeldt defeated Liz Cole |
2019 WPBA Masters 9-Ball |
| Jasmin Ouschan defeated Helena Thornfeldt |
2019 WPBA Masters 9-Ball |
| Helena Thornfeldt defeated Lisa Cossette |
2019 WPBA BLU-EMU Southern Open II Signature Tour Stop 9-Ball |
| Naomi Williams defeated Helena Thornfeldt |
2019 WPBA BLU-EMU Southern Open II Signature Tour Stop 9-Ball |
| Helena Thornfeldt defeated Gerda Gregerson |
2019 WPBA BLU-EMU Southern Open II Signature Tour Stop 9-Ball |
| Jessica Barnes defeated Helena Thornfeldt |
2019 WPBA BLU-EMU Southern Open II Signature Tour Stop 9-Ball |