Kammala jumla mai zuwa: Ba da daɗewa ba bayan wasannin Olympics, Koll ya kafa wani rikodin na kasa a cikin mita 400 na kyauta a gasar zakarun Turai na 2008 na Turai, tare da lokaci na 3:39.82. A shekara mai zuwa, ya sanya aikinsa na biyar na rikodin rikodin Austrian na 1:43.90 ta hanyar kammala na takwas a cikin zafin jiki na maza na 200 m 'yanci a gasar Olympics ta duniya.
Gasar tseren ruwa ta Turai a Istanbul, Turkiyya.