Dee ihe na-aga n'ihu maka paragraf a - Na-eduga na 2012 Summer Olympics
na London, Keizer na van Iersel gbara asọmpi asaa na World Tour. Ha nwetara ihe nrite na abụọ n'ime ha, merie ọla nchara na $300K Beijing Grand Slam, nke ọlaọcha na $300K Gstaad Grand Slam. Ha meriri ndị otu kachasị elu gụnyere ndị otu China nke Xue Chen na Zhang Xi, na ndị otu America nke Kessy na Ross.