Luka Milivojevic twice held his nerve from the penalty spot as Granit Xhaka went from hero to zero in Arsenal's 2-2 draw at Crystal Palace.
The Palace captain was denied from 12 yards by Jordan Pickford in last weekend's defeat at Everton but stepped up to put Roy Hodgson's struggling side in front in first-half stoppage time.
Wayne Hennessey could only touch Xhaka's venomous free-kick into the top corner six minutes after the restart and the Palace goalkeeper just failed to prevent Pierre-Emerick Aubameyang from turning home his ninth of the season at the back post.
The ball was turned Aubameyang's way when Alexandre Lacazette clearly handled a right-wing corner, meaning there was a sense of justice being done when Xhaka - playing in an unfamiliar left-back roll - crudely brought down Wilfried Zaha and Milivojevic fired past Bernd Leno's despairing dive.
