The 25-year-old has been installed as Sunderlandâ€™s premier left-back by manager Steve Bruce despite some initial reluctance from Richardson, who had favoured a central midfield role.
He said: "I played there a bit last season and it has taken me a bit of time to get my head around the position. I thought it was just a defensive role, but in the modern game, full-backs are just as attacking as anyone on the pitch.
"Steve Bruce likes me playing there because Iâ€™m quick and in todayâ€™s game, a lot of wingers are especially quick, so in that sense I can match them.
"I did need a bit of convincing by him, but I talked about it with and my Dad and Iâ€™m really enjoying it now. Iâ€™m learning the basics of defending, my positional sense has improved and Iâ€™m getter better in the role."