#1 Hit: Maya Yoshida
Gunn kept a clean sheet on his Premier League debut and looked right at home, but if not for Maya Yoshida's important interventions, Southampton might be travelling back with nothing to show for their efforts.
Yoshida, 30, has been a model of inconsistency at times in recent seasons and despite his experience, doesn't always command the faith of his defensive-minded teammates. After an excellent defensive display on this occasion, they'll certainly be listening to him.
Manchester United's attackers, even under Jose Mourinho, relished the thought of running at him last month. Away against Chelsea, he adopted a different approach and this proved more effective, to the point where Chelsea's attacks were regularly nullified before they had a chance to test Gunn.
Three completed tackles, eight interceptions, 11 clearances and two blocked shots: he regularly looked to shut out Hazard and co, halting attempted passes in their tracks or remaining patient and sitting deep alongside his counterparts whenever Chelsea were patiently attempting to probe.
An inch-perfect sliding tackle to dispossess N'Golo Kanté as he shaped to shoot in the box proved crucial too, as he would often mistime that challenge and give away a spot-kick. This was a defensive showing to remember - the first time Chelsea have failed to score against Southampton since December 26, 2002!
His passing and distribution (64.3%) were disappointing, but proved his only blemish during an important away display for Southampton - earning their first clean sheet under Hasenhuttl. Just like Luiz though, the real test is whether or not he can maintain these high performance levels throughout the remainder of this campaign. If he can, the Saints should have no relegation thoughts to worry about.
Stats' source: WhoScored