China rebounds to sweep Italy
In the first match of the day, China claimed three points in the preliminary with set wins of 25-21, 25-21 and 25-16 in succession.
China tallied 24 points on Italian errors while giving their counterparts only 12 points in return.
Italy's Paola Ogechi Egonu dominated the box score with 22 points on 19 spikes.
With the sweep, China now has four points in the preliminary round, good for third behind Serbia and the U.S. in Pool B.
Italy has lost all six matches it has played in Rio.
Japan dominates Cameroon
Japan made quick work of Cameroon Monday, needing just under 70 minutes to sweep in consecutive sets 25-20, 25-15 and 25-17.
Japan was upset in the first match of the Olympics Saturday, dropping three of four sets to South Korea.
The fifth-ranked Japan squad rode a balanced approach from Miyu Nagaoka (16 points), captain Saori Kimura (13 points) and Yuki Ishii (13 points) and now ranks fourth in Group A with three points through two matches.
Cameroon has lost all six matches it has played in the Olympics, touching 20 points in just two of those matches.
U.S. survives scare against Netherlands
In what was the most gripping match of the Olympics thus far, the U.S. team narrowly hung on to outlast the Dutch team in five sets.
The Netherlands jumped out to claim the first two sets of the match, but the Americans rose to the challenge with their backs against the wall, securing the final two sets for a victory.
Both teams look poised for a spot in the quarterfinals, so could a rematch be in the cards?
Serbia holds off Puerto Rico
The Puerto Rican squad didn't win a set on the first day of volleyball prelims and they were determined not to go down without a fight.
Puerto Rico battled Serbia to a thrilling finish in the first set Monday afternoon before ultimately losing 29-27.
From there, Serbia put some more distance between itself and Puerto Rico in the final two sets with 25-18 and 25-20 victories.
Serbia currently leads all Olympic teams with six points thanks to a pair of sweeps to begin the prelim stages. They are leading Pool B, one point ahead of the U.S.
Puerto Rico is last in Pool B with zero points on the result of six losses in six sets.
Russia pulls away from South Korea
Russia and South Korea looked like an evenly-matched duel for the first three sets before the Russian team pulled away in the fourth and final set for a victory.
The two teams traded 25-23 victories in the first three sets (with Russia winning Sets 1 and 3 and Korea taking Set 2), but Russia blew out Korea with a 25-14 thrashing in the final set.
Nataliya Goncharova and Tatiana Kosheleva led the charge for Russia with 22 points apiece. Korean captain Kim Yeon Koung scored 20 points on 16 spikes.
Following Day 2 of action, Russia has a share atop Group A with six points in two matches. South Korea is fourth with three points after beating Japan three sets to one in the opener.
Brazil rolls through Argentina
Brazil kept the trend going with a three-set sweep - the fourth of the day - to close out women's volleyball preliminary action Monday.
Argentina didn't raise much of a challenge all night as Brazil won straight sets 25-15, 25-19 and 25-11.
Brazil is currently in first place in Pool A with six points thanks to a dominant six wins in six sets.
Argentina has scored just 85 points in six sets, losing all six.