Roger Federer failed to reach the Halle Open quarterfinals for the first time Wednesday when Félix Auger-Aliassime rallied from a set down to stun the former champion 4-6, 6-3, 6-2 in the second round.

Roger Federer failed to reach the Halle Open quarterfinals for the first time Wednesday when Félix Auger-Aliassime rallied from a set down to stun the former champion 4-6, 6-3, 6-2 in the second round.