Reigning champion Luke Humphries suffered a shock defeat to Rowby-John Rodriguez in Group A as Luke Littler sent out a message from Group F with a 5-0 drubbing of Keane Barry to get off to a perfect start on his Grand Slam of Darts debut.
Britain's Cameron Norrie lost out in straight sets to Frenchman Benjamin Bonzi when appearing in his first ATP Tour final in 19 months at the Moselle Open in Metz.