Instead, fans' abiding memory was a thunderous collision between the young wide-man and Barcelona centre-half Mascherano, which resulted in the two players rolling comically far from the scene of the incident.
Chamberlain had taken a heavy touch instead of finding one of two open teammates at the far post.
The Twitter titters perhaps died away a little as, early in the second half, 'The Ox' was withdrawn - unable to run off the injury he sustained in his crunching clash with Barcelona's Argentine defender.
It was a sad end to a promising night for the player who, while bright and energetic, showed a lack of killer instinct on Europe's biggest stage.
Arsenal vs Barcelona timeline February 23 2016
- Telegraph