Just found a dodgy copy of Rio autobiography online and after a quick search the only time Cardiff are mentioned is when he's talking about getting injured.

"A key moment came when I got injured in the first minutes of an FA Cup game against Cardiff. One of their players went over the ball and twisted my ankle. In truth, the damage was done before the match. A few of the lads had sawn Paul Robinson’s shoes in half, and were generally messing around. It was just a stupid bit of banter while we were having a laugh in the changing room. When I got hurt on the field the manager told me it was my own fault. He said: ‘You got injured because you were messing about before.’"