That talent has made him a two-time Most Valuable Player, as well as a reigning Olympic gold medalist as a member of the U.S national team that won in Beijing in 2008.
VOA: standard.2010.07.08
Foster's sentiments are shared by Twell's Beijing team-mate and relative veteran of the British women's distance-running scene, Jo Pavey.
She said she had discussed the issue with Olympic gold medallist Victoria Pendleton, who was only able to compete in one sprint cycle event at last year's Beijing Games while team-mate Chris Hoy won three golds in the discipline.