Substitute Tommy Smith salvaged a point for Brentford as the Bees marked their first appearance in the second tier since 1993 with a hard-earned draw against Charlton.
Igor Vetokele, who joined the Addicks from FC Copenhagen in the summer, headed his side ahead at Griffin Park.
George Èšucudean and substitute Callum Harriott wasted chances for Charlton.
And they were made to pay as Smith’s late deflected shot ensured Brentford a share of the spoils.
England manager Roy Hodgson was in the crowd at Griffin Park as was Football Association chairman Greg Dyke, the former Brentford chairman. And they witnessed a hard-fought London derby.
Brentford, who secured automatic promotion from League One in April, did not look overawed as they started brightly against opponents who struggled in the Championship last season.
Midfielder Alex Pritchard, on loan from Tottenham, went close from 20 yards in the opening stages before Judge forced Addicks keeper Henderson into a fine 40th-minute save.
But Charlton created the better chances and will likely rue those missed opportunities.
With the game goalless, Èšucudean was clean through but Bees keeper David Button stood his ground to make a fine save.
Charlton, in their first competitive match under manager Bob Peeters, took the lead when Vetokele struck from a corner shortly after the 22-year-old had been denied by Button.
But Brentford responded well and former Cardiff man Smith equalised with a shot that hit Charlton’s former Chelsea and Manchester City defender Tal Ben Haim before finding the net.