The town is host to a football club named Kilmarnock F.C., the oldest professional club in Scotland. Their home ground is the curiously named Rugby Park. The reason for the name of the ground is that when founded, the club played both football and rugby. The club has the largest supporter base of any team outside Scotland's four major cities. Rugby Park was also one of the first football grounds in Scotland to have floodlights installed. In recent years the stadium has been modernised, firstly to bring it in line with the all-seating regulations, then rebuilt totally to make a new ground. It has also hosted international football matches as well as music concerts, the most recent one was when Elton John performed here in June 2005. Derek Olgavie is also a regular appearance in the Palace Theatre.