(COLORADO SPRINGS, COLO.) – Team USA is currently enjoying a six-bout winning streak at the 2011 World Championships following a 4-0 performance on Sunday in Baku, Azerbaijan. Two-time Olympian and 2007 World Champion Rau’shee Warren (Cincinnati, Ohio) and super heavyweight Lenroy “Cam” Thompson (Lenexa, Kansas) both notched their first wins of the tournament while welterweight Errol Spence (Desoto, Texas) and light heavyweight Marcus Browne (Staten Island, N.Y.) each recorded their second victory of the 2011 World Championships in Sunday’s action.

Warren opened competition for the U.S. squad in a bout with Georgy Chygayev of Ukraine. The first round between the two experienced boxers was slow paced with Warren taking a 4-2 lead after the opening stanza. The pace quickened in the second round as both boxers scored seven points to move the score to an 11-9 margin in favor of Warren. The two-time Olympian left no doubt in the third round, outscoring Chygayev 11-6 to win a 22-15 decision and move one step closer to a second world title. Warren will return to the ring for a flyweight match-up with Rey Saludar of the Philippines in Tuesday’s 7 p.m. (10 a.m. ET/7 a.m. PT) session.

Browne was the second U.S. boxer to take the ring, and he looked to build on the momentum of his first round bout, which featured a first round stoppage on the lone punch thrown in the contest. Yet his second victory wouldn’t come as easily as he faced off with Georgia’s Levan Guledani in light heavyweight action. Browne trailed by a 4-3 margin after the first, but he didn’t allow the deficit to distract him from his game plan. He grabbed the lead in the second round, taking his own 8-5 advantage into the final stanza of boxing. Browne held onto his lead over the final three minutes to win a 10-6 decision and advance to a third round match-up with 2009 Heavyweight World Champion Egor Mekhontsev of Russia in Tuesday’s 11 a.m. (2 a.m. ET/11 p.m.) session.

Spence and Thompson both competed in evening action in Baku and won their second round bouts by identical margins. It was Spence who took the ring first as he battled Canada’s Clayton Custio in a welterweight preliminary round contest. The two boxed to a 4-4 tie after one but Spence took control of the bout in the second round, grabbing a 12-7 lead with three minutes remaining. He kept the pressure up in the final round en route to an 18-9 final decision and a berth in the third round. Spence will battle Hungary’s Imre Backsai in Tuesday evening competition.

Thompson was the final U.S. boxer to compete in the 2011 World Championships and he opened competition in a showdown with Australia’s Alexey Muhkin on Sunday night. The U.S. super heavyweight took the early lead in their bout, claiming a 6-3 edge after the first three minutes of action. He slowly extended his advantage over the three rounds of action, holding an 11-7 lead after two. Thompson enjoyed his highest scoring round in the third and won an 18-9 final decision in his World Championships debut. He will return to action on Tuesday evening in a bout with 2004 Olympic silver medalist and 2009 World Championships bronze medalist Viktar Zuyev of Belarus.

Monday’s full day of bouts will be the toughest of the tournament to this point for Team USA as five U.S. boxers compete in second round action and three face a former Olympic or World Championships medalist. Flyweight Eros Correa (San Jose, Calif.) has been off for a full week after claiming his first win of the tournament last Monday. He will battle 2008 Olympian and 2009 World Championships silver medalist David Ayrapetyan of Russia on Monday.

Lightweight Jose Ramirez (Avenal, Calif.) will face the most decorated opponent of the bunch in his second round contest against reigning Olympic and World Champion Vasyl Lomachenko of Ukraine. Lomachenko is competing in his first major international event at lightweight after previously campaigning at the featherweight division.

Bantamweight Joseph Diaz, Jr. (S. El Monte, Calif.) will battle 2004 Olympic silver medalist Worapoj Petchkoom of Thailand in his second bout of the tournament on Monday. Middleweight Jesse Hart (Philadelphia, Pa.) will face Tajikistan’s Sobirjon Nazarov following his first round win on Saturday while heavyweight Joseph Williams (Queens, N.Y.) challenges Kazakhstan’s Vassiliy Levit after a week of inaction in Baku.

USA Boxing National Coach Joe Zanders (Long Beach, Calif.), coaches Ronald Simms (Stafford, Va.) and Manny Robles (Los Angeles, Calif.), technical advisor Ken Porter (Akron, Ohio), and Team Manager Ken Buffington (Marshalltown, Iowa) are leading the United States team in Baku.

The 2011 World Championships are the first international qualifying tournament for the 2012 Olympic Games, and the light flyweight through light heavyweight boxers must place in top ten to qualify for London while the heavyweight and super heavyweight competitors need to place in the top six.

For the full brackets for all 10 weight classes and the most up-to-date results, go to http://www.aiba.org/en-US/2011/2011WorldBoxingChampionships.aspx. AIBA will show live scoring on its website, www.aiba.org throughout the tournament and will start webcasting all the bouts on October 4 at www.aibaboxing.tv.  For more information on Team USA, go to www.usaboxing.org. USA Boxing will tweet all the American results as they happen @usaboxing.

The first AIBA Men’s World Championships were held in 1974 in Havana, Cuba. The event, which consistently showcases the best boxers in the world, is held every two years.

U.S. Results

114 lbs: Rau’shee Warren, Cincinnati, Ohio/USA dec. Georgy Chygayev, UKR, 22-15

152 lbs: Errol Spence, Desoto, Texs/USA dec. Clayton Custio, CAN, 18-9

178 lbs: Marcus Browne, Staten Island, N.Y./USA dec. Levan Guledani, GEO, 10-6

201+ lbs: Lenroy “Cam” Thompson, Lenexa, Kansas/USA dec. Alexey Muhkin, AUS, 18-9