Spectators at the Cazoo Darts Masters were spotted holding up banners calling Mauricio Pochettino 'a clown' on Sunday evening.
Stephen Bunting defeated Michael van Gerwen 11-7 to claim his maiden televised PDC title in Milton Keynes, hitting eight 180s to beat the three-time World Champion.
The 38-year-old had booked his place in the final by defeating world No 1, Luke Humphries and two-time PDC World Darts Championship winner Peter Wright.
But when walking out to the main stage at the Marshall Arena, several spectators appeared to hold up cards that had the words 'Poch is a clown' written on them.