Dave moved into the fourth round of the William Hill World Championship after a straight sets victory over Kim Huybrechts.
Chizzy came from two sets down in his first match to defeat Josh Payne 3-2 before victory against Belgian Kim Huybrechts 4-0 saw him through to the last 16.
There he defeated Jamie Lewis, but he then lost out in the quarter finals to Gary Anderson.
PLAYERS CHAMPIONSHIP FINALS
Dave reached the second round of the Ladbrokes Players Championship Finals in Minehead.
Chizzy overcame Jamie Lewis 6-4 in the first round, but was defeated 3-6 by Chris Dobey in the last 32.
Dave reached the second round of the Unibet European Championship in Dortmund.
He defeated Adrian Lewis 6-5 in round one at the Westfalenhalle, but was defeated 5-10 by Gerwyn Price in the last 16.
WORLD SERIES OF DARTS FINALS
Dave made it through to the quarter finals of the World Series of Darts Finals, played at the Multiversum in Schwechat, Vienna.
After a comfortable 6-1 victory over Max Hopp in round one, Chizzy fought back from 3-5 down to edge out Gary Anderson 6-5 in the last 16.
In the last eight however, Dave was defeated by Michael Smith 5-10.