Oscar and Frank Lampard scored first-half goals as Chelsea marked the start of Jose Mourinho’s second spell as Blues manager with victory over Hull.
McGregor again thwarted Lampard, but the England midfielder responded with a superb free-kick to double the lead.
Newly promoted Hull rallied after half-time but could not force their way back as Chelsea comfortably secured the win.
With his comeback match going to plan, Mourinho can now turn his attention to Wednesday’s visit of Aston Villa.
Mourinho had said of his return to Stamford Bridge, “It’s my dugout, my stadium, my people”, and so it appeared as he emerged from the tunnel before kick-off to ear-splitting noise and a spine-tingling ovation.
The self-proclaimed “Happy One” – when he arrived in 2004 it was the “Special One” – waved to all sides of the ground and blew kisses to the fans before taking a seat as his new team set about dismantling the visitors