Paul Blake, the son of a Star Wars bounty hunter, has won Great Britain's 50th gold medal of the Rio Paralympics.
The four-time Paralympian's success in the individual dressage lA, defending the title she won four years earlier in London, also secured ParalympicsGB overall team gold.
And her 15-year-old team-mate Kare Adenegan finished with bronze to move ParalympicsGB above the London haul, meeting the target set by funding partners UK Sport.
And her mark of 74.348% earned her the individual silver in the Grade 1a competition behind her gold medal-winning GB team-mate Sophie Christiansen, who scored 78.217%.
With a total of seven individual medals for the relay team at the games already, Cox and co would have hoped to add another gold to their tally.
"I'll always be able to say that I won a gold medal in the same stadium as he did", men's wheelchair tennis champion Gordon Reid hails Andy Murray after emulating his fellow Scot's triumph in Rio.
The 26-year old, who had to settle for silver in London four years ago, went one better this time as he raced to victory in a season's best time of 54.49 seconds despite the rainy conditions, beating his main rival and old adversary, Ukraine's Roman Pavlyk into second place by over a second. Class 6-8 bronze in the team table tennis - for Will Bayley, Aaron McKibbin and Ross Wilson - saw Britain's total rise to 119 before Cockroft and Adenegan delivered.
Dan Greaves continued his streak of an F44 discus medal at every Paralympics since Sydney 2000 with bronze.
Brazil's Dias claimed his third gold of Rio 2016 and 13th Paralympic title in all by winning the men's 50m backstroke S5 final, sparking predictably joyous scenes at the Olympic Aquatics Stadium.
"It's been a insane Games for me and I can now try and take it all in and appreciate what I have achieved", Cox said.
"It's not the ideal lane running from lane eight but I just got on with it". London was just so, so special for me, so to retain that title - I just can't believe it.
"It's a dream come true, I would have liked the gold and we'll both be there fighting for it tomorrow and both be riding our socks off for our country". Her expertise may be required after Britain's haul of medals. "I can't wait to see what the team will achieve by Sunday". "They know I work too hard". "He deserves to go out with a bang".
The 55-year-old Victorian finished 17 seconds clear of US's Jill Walsh, who won silver, in the 20-kilometre road race.
Walker was inspired to get into archery by watching American Matt Stutzman competing at London 2012.
And now Walker is Paralympic champion after a 141-139 defeat of David Drahoninsky of the Czech Republic.