The Briton, who won gold at the Rio 2016 Paralympic Games, saw his title defence end in misery as he was comfortably beaten by Sweden's Stefan Olsson.

Olsson, who lost to Reid in the final of last year's event, gained revenge as he claimed a 6-2, 6-3 success to reach the semi-finals.

Reid's doubles partner and compatriot Alfie Hewett beat France's Nicolas Peifer 4-6, 6-2, 6-2 in his singles quarter-final match.

The 19-year-old will play Argentina's Gustavo Fernandez, who he beat in the final of the French Open last month, for a place in the final.

The South American defeated France's Stéphane Houdet 6-2, 6-4.

Shingo Kunieda of Japan is also through to the last four after recording a 6-3, 6-2 straight-sets win over The Netherlands' Maikel Scheffers.

The Netherlands' Jiske Griffioen, the women's reigning singles champion, also suffered a first round exit.

The Paralympic gold medallist and top seed was beaten 6-3, 6-2 by compatriot Aniek van Koot in the first round. 

There was two disappointing results for Britain in the women's action.

Lucy Shuker was comfortably beaten in her opening round match.

She lost 6-3, 6-1 to Japanese second seed Yui Kamiji.

Fellow home hope Jordanne Whiley was also eliminated after losing 6-2, 7-6 to The Netherlands' Diede de Groot.

Germany's Sabine Ellerbrock won the fourth quarter-final after coming through in three sets against Marjolein Buis of The Netherlands.

Ellerbrock, last month's French Open runner-up, came from a set down to win 4-6, 7-6, 6-4.