‘‘I wasn’t expecting to be leading, obviously, and was a little bit freaked out, and didn’t want to look behind,’’ said Diver, who is coached by Australian Nic Bideau.
‘‘The group caught me, and then there was a lot of surging, but I stuck to my own race, prefer to go steady.
‘‘I thought I may pay for it later on, but I hung on.’’
Australian para-athlete Michael Roeger broke the world record with a winning time of 2:22:51 in the T46 class.
‘‘First global gold – it’s pretty special. Wasn’t all smooth sailing out there though!’’ Roeger tweeted.
On a great day for the Australians, Brett Robinson and Jack Rayner finished 11th and 13th respectively in the men’s able-bodied race.
Robinson’s time of 2:10:55 was the quickest by an Australian in 15 years, while Rayner’s effort of 2:11:06 was the second-fastest marathon on debut by an Australian behind only Jeff Hunt.
Kenyan superstar Eliud Kipchoge won the men’s London race for a record fourth time in 2:02:37 – the second-fastest time ever behind only his own 2:01:39 set last year in Berlin.
British star Mo Farah was fifth.