Awarded to the Most Outstanding Under 18 Bowler of the Year
Based on points collected from the Under 18 State Championships. Prior to 2016 this was awarded separately to a male and female player.
Under 18 Bowler of the Year
| Year | Winner | Club |
| 2024 | C Alberti | Osborne Park |
| 2023 | C Alberti | South Perth |
| 2022 | C Alberti | South Perth |
| 2021 | S Pasalich | Osborne Park |
| 2020 | Not Awarded (Covid-19) | |
| 2019 | J East | Rossmoyne |
| 2018 | P Quinlan | Osborne Park |
| 2017 | K Walding | Karratha |
| 2016 | N Fuge | Gnowangerup |
Rosenthal Medallist Medal
Awarded to the Most Outstanding Male Under 18 Bowler of the Year
Based on points collected from the Under 18 State Championships
Rosenthal Medallist Medal
| Year | Winner | Club |
| 2015 | P Quinlan | Belmont City |
| 2014 | J Hamilton | Mandurah |
| 2013 | D Downey | Manning |
| 2012 | M Ayres | Dudley Park |
| 2011 | G Lockett | Mosman Park |
| 2010 | D Elliot M France | Kalamunda Merredin |
| 2009 | C Tunstall | Doubleview |
| 2008 | S Donohoe | Wanneroo |
| 2007 | C Tunstall | Busselton |
| 2006 | M Mitchell | Albany |
| 2005 | B Heldt | Leeming |
| 2004 | J Coleman | Geraldton |
| 2003 | T Mitchell | Albany |
| 2002 | R Tate | Scaddan |
| 2001 | A Provost | Sportsmens |
| 2000 | D Trewhella | Cockburn |
| 1999 | D Trewhella | Safety Bay |
| 1998 | D Opie | Victoria Park |
| 1997 | D Wood | Morrison Park |
| 1996 | D Opie | Victoria Park |
| 1995 | D Opie | Cannington |
| 1994 | J Opie | Cannington |
| 1993 | L Krajancic | Scarborough |
| 1992 | K McIlroy | Wanneroo |
| 1991 | K McIlroy | Wanneroo |
Roma Dunn Medal
Awarded to the Most Outstanding Female Under 18 Bowler of the Year
Based on points collected from the Under 18 State Championships
Roma Dunn Medal
| Year | Winner | Club |
| 2015 | E Allan | Dudley Park |
| 2014 | E Allan | Dudley Park |
| 2013 | E Allan | Dudley Park |
| 2012 | R Cole | Manning |
| 2011 | E Allan | Dudley Park |
| 2010 | K Rogalski K Krstic | Dudley Park Manning |
| 2009 | S Heldt | Gosnells |
| 2008 | M Solly | Manning |
| 2007 | S Heldt | Gosnells |
| 2006 | M Solly | Dudley Park |