Michael van Gerwen, who claimed the title on the Emerald Isle in his first ever defence despite winning it five times hit the highest mark of 94.79 in the Last 16.
Barring his first round, all of his efforts are on the list with them second (Final 94.74), third (Quarter-Finals 94.64), eighth (Semi-Finals 91.41) showing the progression throughout and that he didn't even need to produce his best game in the final to win.
Dave Chisnall did produce his best in the final hitting 93.32 in fourth place and his form was also shown throughout with three more marks on the list in the first round and semi-finals respectively.
Nathan Aspinall and Chris Dobey are the other players on the list with them also impressing. Like alluded to there are usually some one time averages on the list but this is a good representation of who played well barring one or two throughout the double start tournament.
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Top ten highest averages - World Grand Prix 2019
94.79 Michael van Gerwen (Last 16)
94.74 Michael van Gerwen (Final)
94.64 Michael van Gerwen (Quarter-Finals)
93.32 Dave Chisnall (Final)
93.26 Nathan Aspinall (Quarter-Finals)
92.50 Dave Chisnall (First Round)
92.04 Nathan Aspinall (First Round)
91.41 Michael van Gerwen (Semi-Finals)
91.17 Dave Chisnall (Semi-Finals)
90.13 Chris Dobey (Quarter-Finals)