What you missed last night in Rio 2016: Seven things that happened while you were sleeping
A lot of medals were handed out last night, world records were broken and some big names suffered shock losses. Fine out what you missed out in below.
1. Ireland suffer heavy defeat to the Dutch
Following a narrow defeat to India on Saturday, Ireland played well but were still on the receiving end of a 5-0 thumping against a very powerful Netherlands outfit last night.
Mink van der Weerden fired in two thunderbolt penalty corners while there were also goals for Jorrit Croon, Mirco Pruyser and Eugene Magee turned the ball into his own net while under a lot of pressure.
Ireland next game is against Germany tomorrow at 4.30pm our time.
2. Shane Ryan fails to advance from the semi-finals of the men's 100m backstroke
American-born Shane Ryan failed to advance from the semi-finals of the 100m backstroke at Rio in the early hours of the morning.
The 22-year-old faded in the latter stages of the race to finish last of eight in his final and 16th overall in a time of 54.40.
Ryan swam a new PB and set a new Irish record of 53.85 in his heat.
He's back in action in the the 100m freestyle on Tuesday.
3. Great Britain's Adam Peatty sets new WR as Michal Phelps grabs gold medal number 19
Adam Peaty was stunned after his dominant Olympic gold-winning swim left him wondering where his rivals were and in disbelief at his incredible feat.
The 21-year-old from Uttoxeter won Britain's first medal of the Rio Olympics, ending a 28-year wait for gold in the process.
Not since Adrian Moorhouse in 1988 had a British male won an Olympic swimming title and Peaty won the same 100 metres breaststroke race in a world record of 57.13 seconds and by more than 1.5secs.
"This doesn't feel like an Olympics because I've got this around my neck," said Peaty, world, European, Commonwealth and now Olympic champion after his medal ceremony.
"Going down that last 50 I was aware that I was in front, but not by that much."
Michael Phelps made his first appearance of the Games and came away with a gold medal along with his USA team-mates in the 4x100m freestyle relay.
It took Phelps' remarkable tally to 23 Olympic medals, 19 of them gold.
Sweden's Sarah Sjostrom set a world record of 55.48secs to win the women's 100m butterfly, bettering her own mark.
Controversial Russian Yulia Efimova was again booed before and after winning her semi-final in the 100m breaststroke and goes into the final as the second-fastest qualifier.
4. There were two surprise exits in the mixed doubles
The Murray brothers' dismal run in Olympic doubles competition continued as they were beaten in two tie-break sets by Andre Sa and Thomaz Bellucci of Brazil.
In front of a raucous and passionate crowd, the British pair fought tooth and nail, especially in an extraordinary second set tie-break that saw them save six match points.
But they were living dangerously, and on the seventh, Bellucci's backhand drive flicked the net and jumped up over Andy Murray's waiting racket to seal the result. The 7-6, 7-6 defeat means that the Murrays have now lost three straight Olympic doubles matches.
There was also a surprise as Serena and Venus Williams lost to the Czech pairing of Lucie Safarova and Barbora Strycova - who had never won a game of doubles together before.
5. And Novak Djokovic crashed out in the first round of the singles
World number one Novak Djokovic was dumped out of the Olympics in the first round on Monday morning, losing for the second successive Games to Juan Martin del Potro of Argentina.
Four years ago in London, the giant Del Potro had defeated the Serb in the bronze medal match and he repeated the shock in a stunning 7-6 , 7-6 victory.
6. Brazil were held to a goalless draw by Iraq
An irritated Neymar drew another blank as Brazil's faltering bid for a first football Olympic gold continued with a second 0-0 draw in as many games against Iraq.
The Barcelona star became increasingly frustrated with the rough treatment he received and Iraq's time-wasting tactics as Brazil were booed off the field in Brasilia for the second time in four days.
Renato Augusto missed Brazil's best chance when he somehow lifted the ball over with an open goal deep into stoppage time.
7. A Dutch cyclist was in intensive care after a heavy crash in the women's road race
Annemiek van Vleuten suffered a heavy crash during the women's road race, and shortly before midnight it was announced that the Dutch cyclist was in intensive care with concussion and three fractured vertebrae.
The cyclist was immediately rushed to hospital, and the Dutch chef de mission, Maurits Hendriks, later said that she had suffered a severe concussion as well as three small fractures to her lumbar spine. She is expected to spend 24 hours in intensive care.