Here's a look at the groups following round two of play in the men's group phase. The top four teams from each group advance to the quarterfinals.
1. France: 4 points (+17 goal differential)
2. Denmark: 4 points (+14)
3. Croatia: 2 points (-6)
4. Qatar: 2 points (-8)
5. Argentina: 0 points (-7)
6. Tunisia: 0 points (-10)
1. Germany: 4 points (+6 goal differential)
2. Slovenia: 4 points (+4)
3. Egypt: 2 points (0)
4. Brazil: 2 points (-1)
5. Sweden: 0 points (-4)
6. Poland: 0 points (-5)
Group A: Croatia avoid disaster and upset in 27-26 victory over Argentina
The evening session began saw one major upset. Croatia made sure it wouldn't see two.
Croatia, coming off a humbling defeat to Qatar in the opening round of play, needed to get some momentum going if they were to get back into the knockout phase. They did just that, but not without a tough challenge by Argentina.
Argentina actually led the podium contenders 18-17 at the half.
Unlike their opening round match, when they ran out of gas in the second half, Argentina kept the Croatians humble.
The Argentinian back line did a fine job in containing Croatia's biggest scoring producer, Domagoj Duvnjak, holding him to just two goals through over 40 minutes of play.
Croatia's 5-0-1 defensive line proved effective in the second half, forcing the Argentina turnover and scoring off the fast break to shift the momentum of the match.
Argentina wouldn't go away, though, with their defense buckling down in the final 10 minutes of play, forcing a turnover by Croatia and leveling it up at 24-24. Just a minute later is was Argentina back in front with a goal by Federico Pizarro.
The tension continued to mount well into the 29th minute as both sides were level. A clutch save by Matias Schulz gave Argentina the ball in the final 30 seconds of play, but Argentina made a costly turnover and with merely nine seconds to go, giving Croatia one last chance to avoid disaster.
A penalty by Argentina proved to be disastrous - Domagoj Duvnjak gave Croatia the go-ahead goal off a seven meter penalty shot.
Federico Pizarro had one more chance to equalize as Argentina were awarded a free throw from approximately 15 meters out, but it was blocked by the Croatian wall.
Group B: Egypt stun Sweden 26-25
Egypt were a much tougher opponent than Sweden had anticipated, beating the 2012 silver medalists for the first time ever to kick off Monday's evening session.
The Egyptians matched Sweden shot-for-shot, not giving in to the Swedes' fluid style of play.
Sweden played decently in the first half, having a better shooting efficiency than Egypt - 68% to 55%, respectively - but Egypt just managed to hang in there. Winger Mohammad Sanad was particularly difficult to contain in that half, netting the ball five times. He would finish the game with seven goals.
Their play didn't let up in the second half, as Egypt continued to find ways to work through the Swedish back line.
Mahmoud Khalil made a clutch save in the 25th minute of the second half, giving his Egyptian team a chance to take the lead, which Mamdouh Abouebeid let up by stepping inside the goalie's zone.
Ibrahim El Masry received an untimely two minute suspension with just three minutes remaining. But Nielson was also sent off one minute later, giving Egypt the chance to close the game with a one man advantage.
Ali Zein Mohamed gave Egypt just moments later with a shot outside the nine meter line.
Lukas Nilsson masterfully countered, finding his way between the Egyptian defense and getting the ball through the keper's legs. Kim Andersson of Sweden was also issued a two minute suspension in the final 30 seconds, allowing Egypt to finish the game with a two man advantage.
A strike by Mohamed Hesham Elbassiouny sealed the deal for Egypt's stunning upset over Sweden.
With this loss, Sweden now move to 0-2 in group play and their chances of getting back into the quarterfinals are marginal at best.
Group B: Slovenia (2-0) defeat host Brazil (1-1) 31-28
Brazil fell back down to Earth after their collision with Slovenia in the second round.
Loose defense paved the way for Slovenia to break through early, only missing two shots out of 18 in the opening 30 minutes of play.
Brazil were given a window to minimize the damage during that time courtesy of a a double two minute suspension by Slovenia, but couldn't make the most of it.
Slovenia proved they have more scoring threats than just Blaz Janc as Jure Dolenec and Dean Mombac scored four and five goals in the first half, respectively.
Brazil continued to struggle in containing Slovenia in the second half, who were 12 for 15 from the six meter line.
Fabio Chiuffa attempted to lift the struggling Brazilians on his shoulders and suddenly - and unexpectedly - Brazil somehow found themselves down by just two goals in the final eight minutes. Slovenia did well to stay cool and collected, though, unfazed by the hostile and pro-Brazilian crowed. After drawing the two minute penalty in the 26th minute, Matej Gaber scored to give Slovenia a four point lead that surely seemed to be the decisive blow .
Group A: Denmark (2-0) coast past Tunisia 31-23
Denmark took one step closer to getting back into the quarterfinals of the Olympics, cruising past Tunisia.
Tunisia lost one of their key players, Issam Tej, in the opening minutes of play because of a red card. Denmark took advantage of the opportunity, busting the door open to take a seven point lead in the first half.
Lasse Svan and Casper Mortensen were both highly efficient for Denmark, coverting 8 of 10 and 8 of 11 times on scoring opportunities, respectively.
Group B: Germany (2-0) edge Poland (0-2) 32-29
Germany edged Poland in what was a very physical and tense 60 minutes of play.
Both sides put on a fine defensive display, shifting shifting members on and off the line to stuff the were reering to break into the six meter line in the first half, drawing their opponents into penalties and suspensions. Both teams had over 10 attempts from the nine meter line.
Germany's efficiency once they broke through that line, though, is what propelled them to victory today. Germany was a perfect six-for-six while Poland missed four opportunities out of nine.
Karol Bielecki was class today for Poland, leading the Poles in maneuving the ball and in finishing the job. Bielecki finished the game with 10 goals.
Bielecki's efforts weren't enough, and it was Poland's defense that blinked first. Attempting to keep Germany from barging down the middle, Poland narrowed its defense and pushed some of its members up. But that proved to be costly mistake, opening the door for Germany to strike from the wing and a four-goal lead in the final 10 minutes of play.
Poland, now winless in two games, are in trouble of advancing out of a group in which they were highly favored to finish on top of.
Group A: France (2-0) dominate Qatar (1-1) 35-20
In a repeat of the 2015 World Championships, which France won by just three goals, the two-time defending gold medalists crushed the Qatari side in an exceptional display.
Qatar, a medal contender this Olympiad with a team of naturalized citizens, hoped to assert themselves as gold medal favorites, but the French depth and wide array of attacks were too much for Qatar to handle.
Things got off to a very testy start with both sides getting involved in scrappy play, drawing two minute suspensions and yellow cards.
With Thierry Omeyer's impressive managing of the net and Nikola Karabtic's class up front, France began to open things up in the second half. Led by Karabatic, France consistently outmuscled and outmanuevered the Qatari back line on the fast break.
Karabatic finised the game with five goals.
Qatar struggled to get past a deadlocked French defense that forced the Qataris to force ineffective shots from long distance. Qatar only managed seven shots from the six meter line, while making 30 attempts from behind nine meters.
Zarko Markovic, the premier scorer for Qatar, was held to just four goals.
Luc Abalo punished Qatar off the flanks, adding to the variety that the French squad has at its disposal. The right winger led his team in scoring today with seven goals.
France quickly pulled away from Qatar, opening up an 11 point lead midway through the second half and never looked back, exposing Qatar's flaws on both sides of the court.