Adams went into the Olympic final as a largely unknown underdog, only to dismantle the three-times world champion Ren Cancan, putting the Chinese fighter down with a firecracker of a left hook followed by an up-the-middle right, before winning a wide points decision.
His discipline and concentration in a wide points victory over the former world champion Luis Collazo on his debut at 10st 7lb were so far removed from his wild and vulnerable days as a light-welterweight as to make him almost unrecognisable.
Despite outboxing the champion and building a wide points lead, Robinson - perhaps the greatest pound-for-pound fighter of all time - gradually succumbed to heatstroke and, after collapsing to the canvas and staggering drunkenly towards his corner, failed to come out for the start of the 14th.
The 22-year-old from London breezed into the Olympic middleweight final with a fine exposition of tap-and-move boxing as he won a wide points victory over the Irishman Darren Sutherland, and will now face Cuba's Emile Correa Bayeaux for the gold medal later today.
Londoner Joyce drove Australian opponent Joe Goodall back from the opening bell and won by a wide points margin.
Goodall was given a standing count towards the end of the second round after a sickening body shot by Joyce, who was subsequently awarded a wide points decision.
