 On 25 February 1998, he made his debut for the first team, coming on as a 79th-minute substitute in the 3–2 defeat to Barnsley in the FA Cup fifth round replay at Oakwell.He won the Denzil Haroun Reserve Team Player of the Year award for the 1997–98 season.Twiss made his first start for United on 13 October 1999, playing 73 minutes in the 3–0 defeat at Aston Villa in the League Cup third round, before being replaced by Richie Wellens.