After his father died of brain cancer a year ago, teenage diver Tom Daley went into the Olympics determined to win a medal "for myself and my dad."

The 18-year-old Briton missed out in his first event on Monday, finishing fourth in the 10-meter synchronized platform with teammate Pete Waterfield.

What made it worse for Daley was the response from one Twitter user.

"You let your dad down i hope you know that," (at)Rileyy69 tweeted.

Daley retweeted the abuse and said: "After giving it my all...you get idiot's sending me this."

There was an immediate outcry, with users tweeting: (hash)GetRileyy_69Banned.

"how am i trending worldwide?" (at)Rileyy69 asked.

His account is currently locked.

— Rob Harris — Twitter http://twitter.com/RobHarris

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