Tournament favorites Spain have suffered one of the biggest upsets in Olympic football history , losing 1-0 to Japan at Glasgow 's Hampden Park on Thursday . Brazil got their Olympics started with a 3-2 win over Egypt in Cardiff , whilst Team GB , playing their first Olympic football tournament since 1960 , began with a 1-1 draw with Senegal . In the afternoon kick off , Spain fell to a goal from Yuki Otsu , who found the net in the 33rd minute , thumping the ball home from a corner . Things got worse for Luis Milla 's Spain side as Real Sociedad defender Inigo Martinez was shown a red card minutes before half time . Spain 's Olympic squad has been expected to add Olympic gold to the country 's already impressive collection of titles . The Spanish team recently won its second consecutive European Championship , to add to the 2010 World Cup won in South Africa . Spain also hold the European under 19 and under 21 titles . The European champions enjoyed more of the ball throughout the 90 minutes but they struggled to deal with the pace of Japan 's attacks , with David De Gea , Manchester United 's young goalkeeper , keeping his country in contention with several fine saves . Japan , who upset the odds when they beat favorites Brazil at the 1996 Atlanta Games , could have extended their lead as Spain chased a goal , but Nagai and Hotaru Yamaguchi both failed to convert easy chances . Brazil demonstrated why many feel they are the team to challenge Spain for the gold medal , with an explosive opening 26 minutes that saw the South American side take a 3-0 lead against Egypt . The much lauded Neymar drove a fluid attacking performance . It was Neymar , who still plays in Brazil despite repeatedly being linked with some of Europe 's biggest clubs , that provided a perfect pass for full back Rafael to open the scoring , before in the 16th minute , providing a low cross that invited Leandro Damiao to double the lead . With 26 minutes gone the 20 year old surged through the Egypt defence before exchanging passes with Hulk , on the left wing , and burying the ball past goalkeeper Ahmed Elshenawi . The five time World champions struggled to continue their dominance in the second half , with Egypt captain Mohamed Aboutrika pulling a goal back in the 52nd minute . Mohamed Salah increased the pressure on Brazil , who are seeking to win their first Olympic football gold medal , with his goal 14 minutes from the end , but Egypt could n't find an equalizer . Brazil vs. Spain - who will win Olympic gold ? In the evening 's other Group C game , Belarus enjoyed a 1-0 victory over New Zealand , with Dmitry Baga scoring the winning goal . New Zealand goalkeeper Michael O'Keefe failed to clear a corner on the stroke of half time , and Baga was left with a simple header to give his side the lead . The reformed Great Britain side , who have n't competed in the Olympic football competition since 1960 , made a steady , if uninspiring , Olympic return at Old Trafford , Manchester . Craig Bellamy opened the scoring for the host nation in the 20th minute , but Stuart Pearce 's team could n't find a second goal . With eight minutes to go , Senegal striker Moussa Konate pulled his side level with a goal against the run of play . Senegal broke quickly after intercepting a poor Great Britain corner , and Konate did well to reach a through ball from Pepe Souare and chip it over the onrushing Britain goalkeeper . Current South American champions Uruguay got their Olympics off to a good start with a 2-1 win over the United Arab Emirates . UAE took a surprise lead when captain Ismael Matar took the ball around Uruguay goalkeeper Matin Campana and slotted it into the bottom corner . Uruguay talisman Luis Suarez dragged his side back into the tie , with a key role in both Gaston Ramirez 's equalizer and Nicola Lodeiro 's winner . Uruguay 's three points sees them top Group A , with Great Britain and Senegal following with a point a piece . Earlier in the day , Spain 's group rivals Honduras and Morocco got the men 's tournament underway with a 2-2 draw . the result ensured Spain are bottom of the group after the first round of matches . Abdelaziz Barrad opened the scoring for Morrocco , before Honduran forward Jerry Bengtson equalized with a close range tap in . Bengtson , who plays for New England Revolution in the U.S. , then put his side ahead with a 65th minute penalty . The lead only lasted two minutes though , Zakaria Labyad chipping the ball over Honduras goalkeepr Jose Mendoza in the 67th minute . Moments later Morocco 's Zakarya Bergdich was sent off for kicking out at Mario Martinez , but the African side managed to hold on for a point . Mexico and South Korea got Group B underway with a goalless draw at St. James ' Park , Newcastle . Substitute Raul Jimenez struck the post for Mexico in injury time , while South Korea captain Jacheol Koo went close with a glancing header . It was a disappointing game between two sides with genuine hopes of making it to the knockout stages . In the other Group B game , Gabon and Switzerland tied 1-1 after Pierre Aubameyang saved a point for the African side after Admir Mehmedi gave the Swiss side the lead with a fifth minute penalty .
France stun England with 1 - 0 victory . Brazil follow with 3 - 2 win over Portugal . After 62 year wait , Team GB can only win one with Senegal . Luis Suarez inspired Uruguay beat UAE 2 - 1 .