 Van Riemsdyk akadzokera kuWorld U18 Championships muna 2007, achibatanidza kutungamira kwemakwikwi aine mapoinzi gumi nemaviri uye achibatsira kutora Team USA kumenduru yesirivheri. Van Riemsdyk akatumidzwa zita rekutanga kumberi mumutambo uye mutambi anokosha kwazvo, uye akagamuchira sarudzo kumutambo weAll-Star timu. 2007 raivewo gore ravan Riemsdyk rekutanga World Junior Ice Hockey Championships WJC kuoneka. Akatamba mumitambo mina yeiyo nhepfenyuro, achinyora chibodzwa chimwe, uye Chikwata cheUSA chakatora kumba menduru yebronze. Van Riemsdyk akaonekwawo pa2008 na2009 WJCmitambo. Kunyange zvazvo Team USA yakakundikana kuwana menduru mumakwikwi ose, van Riemsdyk akatungamirira vatambi vose mukuwana mu2008, aine 11 mapoinzi mumitambo mitanhatu, uye akaisa mamwe mapoinzi gumi gore rakatevera. 