Store procedure date conversion error.

Hi,

I have a store procedure that giving some error in running.

error"Conversion failed when converting date and/or time from character string"

USE [db]

GO

/****** Object: StoredProcedure [db].[Select_Top5] Script Date: 09/17/2014 15:24:20 ******/

SET ANSI_NULLS ON

GO

SET QUOTED_IDENTIFIER ON

GO

ALTER procedure [db].[Select_Top5]

as

begin

select top 5 RANK() OVER (ORDER BY convert(int, Round(( Cast( DATEDIFF(YY,convert(datetime,Playerdob,101),( select convert(datetime,getdate(),101) ) )*bowlingpoint as Float)/32),0)) desc) AS Rank,PlayerId,PlayerName, Round(( Cast( DATEDIFF(YY,convert(datetime,Playerdob,101),( select convert(datetime,getdate(),101) ) )*bowlingpoint as Float)/32),0) as bowlingpoint ,Totalmatches, t.TeamName as Team,t.TeamId as TeamId from Playerprofile join TeamProfile t on Playerprofile.TeamId=t.TeamId

end

Can anyone able to solve this problem.

Thanks