 Towards the end of 2008, Keizer changed partners once again and paired up with Marleen van Iersel.She began to see better results on the international circuit, including her first World Tour podium at the $190K Japan Open in the spring of 2009.After losing their first match, the 13th-seeded Keizer and van Iersel won six consecutive matches to reach the final four, recording upsets over two top-five seeds along the way.