 Kọ itẹsiwaju fun paragirafi yii - Gẹgẹbi ọmọ kekere Wallin kopa ninu 2002 World Junior Speed Skating Championships. Wallin soju fun orile-ede re ni ife-eye World Sprint Speed Skating Championships fun awon obirin merin ati ni ife-eye World Single Distance Speed Skating Championships meji. Ó kópa nínú ìdíje World Sprint Championships lọdún 2006 : ìparí 29th overall, 2007 ìparí 23rd overall, 2008 ìparí 30th overall àti ní 2009 ìparí 26th overall. Ní 2007 World Single Distance Speed Skating Championships, ó kópa nínú ìdíje 500 metres 17th àti nínú ìdíje 1000 metres 22nd. Ọdún méjì lẹyìn náà ní 2009 World Single Distance Speed Skating Championships, ó kópa nínú ìdíje 500 metres. O tun dije ni awọn idije kariaye miiran, pẹlu ni ISU Speed Skating World Cups. 