Much of football's focus this week has centred on the fallout of Chelsea's 3-2 loss to Manchester United last week, which caused consternation on the pitch as well as off it - in the wake of the allegations the Blues have made against referee Mark Clattenburg.
Roberto Di Matteo would no doubt have been relieved he could put those matters to one side and although Victor Moses' 61st-minute header put them in charge, they were forced to settle for a share of the spoils when Hernandez levelled with a magnificent low strike from outside the area.
Chelsea's draw means United are the league leaders after former Arsenal striker Robin van Persie returned to haunt his former club in their 2-1 win over the Gunners.
The prolific Dutchman's move over the summer to rivals United has been keenly felt in north London, and they were given an unfortunate reminder of his predatory instincts when he fired past Vito Mannone in the third minute.
Wayne Rooney missed United's fourth penalty of the season although Patrice Evra doubled the hosts' lead after 67 minutes before Jack Wilshere was dismissed for a second bookable offence soon after.
Santi Cazorla netted a fine consolation from the edge of the box in injury time but it was too little, too late.
Steve Sidwell's last-gasp goal helped Fulham salvage a 2-2 draw against a Marouane Fellaini-inspired Everton.
The Cottagers looked on course to claim their fourth home victory in five league matches when they took the lead after Bryan Ruiz's exquisite 25-yard free-kick came back off the upright before cannoning off Tim Howard's back and into the net.
But a brilliant brace from Belgian Fellaini turned the match on its head before substitute Sidwell struck from close range.
Toffees' captain Phil Neville last week expressed his desire to see his side claim a Champions League place this season and they moved into the top four after Tottenham suffered a shock 1-0 home defeat to Wigan.
The Latics, who had won just two of their nine opening fixtures before Saturday, were not content to sit on the back foot and had three decent chances to open the scoring, with Spurs keeper Brad Friedel keeping the scores level at half-time.
But after the interval, the American punched clear an inswinging Shaun Maloney corner into the path of Ben Watson to volley over the line.
Bradley Johnson's first-half header gave Norwich a 1-0 win at home to Stoke while Gabriel Agbonlahor's 57th-minute strike - his first in 29 matches - propelled Aston Villa to a 1-0 win at Sunderland.
Manchester City remain third, a point behind Chelsea, after a 0-0 draw at West Ham with Roberto Mancini's tinkering backfiring again.
Ten days after his three-at-the-back experiment in City's shattering Champions League defeat at Ajax, manager Mancini was at it again at the other end of the pitch at Upton Park.
But the decision to start with Mario Balotelli, Carlos Tevez and Edin Dzeko in the same XI for the first time failed just as spectacularly as the champions failed to score for the first time in almost seven months.
It could have been even worse for Mancini's men had Kevin Nolan not seen an early goal controversially ruled out for offside as West Ham more than held their own and were marshalled brilliantly by Winston Reid and James Tomkins.
There were no excuses for the shocking defending that should have seen City behind inside four minutes.
Mark Noble played a simple straight free-kick over the top, which Nolan brilliantly volleyed first time past Joe Hart.
The assistants' flag was up instantly, although replays showed Nolan may have been level.
Barry then produced one of the misses of the season midway through the half as he controlled Carlos Tevez's ball on his chest but somehow prodded wide from barely three yards.
Sunday's Barclays Premier League Results
QPR 1-1 Reading
Saturday's Barclays Premier League Results
Man United 2-1 Arsenal
Fulham 2-2 Everton
Norwich 1-0 Stoke
Sunderland 0-1 Aston Villa
Swansea 1-1 Chelsea
Tottenham 0-1 Wigan
West Ham 0-0 Man City