Tabern reached the quarter-finals of the 2007 PDC World Darts Championship, where he was beaten 0–5 by eventual winner Raymond van Barneveld.
In the 2008 World Championship, Tabern defeated Denmark's Per Laursen and Andy Jenkins, before losing 3–4 in the third round to Phil Taylor.
He played in the 2008 Grand Slam of Darts, where he was involved in the first televised nine-dart shootout after he and Hamilton had finished level on points and leg difference in their group.
[2] The following year, he suffered another second round defeat, this time losing 3–4 to Mark Dudbridge, having missed six darts to win.
On the second day of 2018 Q School in Wigan, Tabern managed to regain his tour card for 2018–2019 after beating Steven Kirkby 5–1 in the final.