What is the Olympic record for 50m swimming?

For men, it's 21.30 seconds, set by Cesar Cielo Filho yesterday.

For women, it's 24.06 seconds, set by Britta Steffen this morning.

Prior to the 2008 Olympics, the previous records had stood since 1992 and 2000 respectively.

Well I thought that Michael phelps held the swimming record?