Problems in sorting wrt Date

Hi,
Please help me in the below:
I am trying to sort it in date order but I am failing somewhere L . Can anyone please help me on this? Your help is most appreciated on this.
$ autorep -j EDSPME% | grep ' OI' | grep -v '^ ' |awk '{print $4 " " $1}'| sort -r -t/ -k 3 -k 2 -k 1
04/29/2008 XXXYYY_FD_ABC_RPT_FW2_123
04/29/2008 XXXYYY_FD_ABC_RPTB_FW2_123
06/05/2008 XXXYYY_FD_MLCD_CKJS_123
04/29/2008 XXXYYY_CD_ABC_RPT_MV2_123
04/29/2008 XXXYYY_CD_ABC_RPTB_MV2_123
05/05/2008 XXXYYY_CD_ABC_TWO_123
05/05/2008 XXXYYY_CD_ABC_ONE_123
05/05/2008 XXXYYY_CD_ABC_ADITWO_123
05/05/2008 XXXYYY_CD_ABC_ADIONE_123
05/16/2008 XXXYYY_BD_RICEMEA_123
05/15/2008 XXXYYY_BD_RICAPR_123
05/16/2008 XXXYYY_BD_REDI_123
04/09/2008 XXXYYY_BD_PEEX_123
06/04/2008XXXYYY_BD_MLCD_123
05/16/2008 XXXYYY_BD_HYPORIC_123

Hi,

Try this,

autorep -j EDSPME% | grep ' OI' | grep -v '^ ' |awk '{print $4 " " $1}'| sort -r -t/ -k 3 -k 1 -k 2

Regards,
Chella