2017 Arnold Schwarzenegger Classic
2 • IM jposthuma •- vs Aryan Balyan
- vs Scott Ramer
- vs Awonder Liang
- vs Vincent Baker
- IM jposthuma
2017 Chicago Open
9 • IM jposthuma •- GM Ruifeng Li (2574) - Joshua Posthuma (2268)
- Joshua Posthuma (2268) - FM Arthur Guo (2122)
- Joshua Posthuma (2268) - Steve Wongso (1636)
- IM Michael Song (2423) - Joshua Posthuma (2268)
- IM jposthuma
2017 King's Island Open
3 • IM jposthuma •- Joshua Posthuma (2308) - Johnson Moore (2080) 1-0
- Mark Ferber (2154) - Joshua Posthuma (2308) 0-1
- Joshua Posthuma (2308) - Ben Li (2426) .5-.5
- William Sedlar (2373) - Joshua Posthuma (2308) .5-.5
- IM jposthuma
2017 Michigan Class Championship Games
3 • IM jposthuma •- Joshua Posthuma (2255) - Manis Davidovich (2229) WIN
- Joshua Posthuma (2255) - Justin Liang (2039) WIN
- Alexander Deatrick (2136) - Joshua Posthuma (2255) DRAW
- Mark Heimann (2440) - Joshua Posthuma (2255) DRAW
- IM jposthuma
- NM mn8
- NM upandcomer
2017 Michigan Open
5 • IM jposthuma •- Joshua Posthuma (2315) - Gregory Bailey (1903)
- Joshua Posthuma (2315) - Eric Li (1944)
- Andrew Schremser (2010) - Joshua Posthuma (2315)
- Jason Zheng (1923) - Joshua Posthuma (2315)
- IM jposthuma
2017 Supernationals Games
11 • IM jposthuma •- Joshua Posthuma (2317) - Prateek Pinisetti (2133) 1-0
- Eric Hon (2058) - Joshua Posthuma (2317) 0-1
- Joshua Posthuma (2317) - Rochelle Wu (2082) 1-0
- IM Kesav Viswanadha (2458) - Joshua Posthuma (2317) 1-0
- IM jposthuma
All of my tournament games, 2012-present
2 • IM jposthuma •- 2012
- Norman Haygood (1491) - Joshua Posthuma (1751)
- Harrison He (1643) - Joshua Posthuma (1776)
- 2013
- IM jposthuma
Chicago Cup Games
4 • IM jposthuma •- Joshua Posthuma (2308) - Nick Schwerin (1907)
- Lawrence Cohen (2018) - Joshua Posthuma (2308)
- Zhaozhi Li (2461) - Joshua Posthuma (2308)
- Joshua Posthuma (2308) - Rene Ancheta (2038)
- IM jposthuma