MLS is a three-letter abbreviation that may refer to the following:

Diego Hernán Valeri (born 1 May 1986 in Lanús) is an Argentine football midfielder who currently plays for Club Atlético Lanús in the Argentine Primera División.

Valeri started his professional career with his hometown club Lanús in 2003. In 2007, he was part of the squad that won the 2007 Apertura tournament, Lanús' first ever top flight league title.

On 16 July 2009, Valeri was loaned to Portuguese champion Porto, where he played one season, winning the Portuguese Cup. He then spent 6 months on loan at Spanish UD Almería.

In 2011, Valeri rejoined Lanús. He captained the team in their 2011 Clausura runner-up campaign.

On March 16, 2011, Valeri played his first ever game for Argentina in a friendly match against Venezuela, helping Argentina win 4–1.

Thierry Daniel Henry (French pronunciation: [tjɛʁi ɑ̃ʁi]; born 17 August 1977) is a French footballer who plays as a striker for New York Red Bulls in Major League Soccer.

Henry was born in Les Ulis, Essonne (a suburb of Paris) where he played for an array of local sides as a youngster and showed great promise as a goal-scorer. He was spotted by AS Monaco in 1990 and signed instantly, making his professional debut in 1994. Good form led to an international call-up in 1998, after which he signed for the Serie A defending champions Juventus. He had a disappointing season playing on the wing, before joining Arsenal for £11 million in 1999.

It was at Arsenal that Henry made his name as a world-class footballer. Despite initially struggling in the Premier League, he emerged as Arsenal's top goal-scorer for almost every season of his tenure there. Under long-time mentor and coach Arsène Wenger, Henry became a prolific striker and Arsenal's all-time leading scorer with 228 goals in all competitions. The Frenchman won two league titles and three FA Cups with the Gunners; he was nominated for the FIFA World Player of the Year twice, was named the PFA Players' Player of the Year twice, and the FWA Footballer of the Year three times. Henry spent his final two seasons with Arsenal as club captain, leading them to the 2006 UEFA Champions League Final.

Jermain Colin Defoe (born 7 October 1982) is an English footballer who plays as a striker for English Premier League club Tottenham Hotspur, and the England national football team.

Defoe began his career with Charlton Athletic, joining their youth team at age fourteen, before moving to West Ham United aged sixteen, and rising through the ranks. He made his professional debut for West Ham in 2000, and after a season-long loan spell at Bournemouth during the 2000–01 season, established himself in the West Ham lineup. A move to Tottenham in 2004 soon followed, and Defoe also spent a year at Portsmouth after he was deemed surplus to requirements at White Hart Lane. He has since returned to Tottenham in the January 2009 transfer window. Defoe made his England debut in 2004 and as of March 2011, has made 46 appearances, scoring 15 goals.

Defoe is widely considered as one of the most clinical finishers in England, with an exceptional scoring rate, especially in cup competitions, scoring 40 goals in 63 games.

Clinton Drew "Clint" Dempsey (born March 9, 1983) is an American association football player who plays for Fulham and the United States national team. He usually plays as a deep-lying forward.

Growing up in Nacogdoches, Texas, Dempsey played for one of the top youth soccer clubs in the state, the Dallas Texans, before playing for Furman University's men's soccer team. In 2004, Dempsey was drafted by Major League Soccer club New England Revolution, where he quickly integrated himself into the starting lineup. Hindered initially by a jaw injury, he would eventually score 25 goals in 71 appearances with the Revolution. Since 2007, Dempsey has played for Premier League team Fulham and has earned the club record for goals scored in Premier League matches.

Dempsey first represented the United States at the 2003 FIFA World Youth Championship in the United Arab Emirates. He made his first appearance with the senior team on November 17, 2004, against Jamaica; he was then named to the squad for the 2006 World Cup and scored the team's only goal of the tournament. Dempsey recorded the fastest goal in U.S. World Cup qualifying history by scoring after 53 seconds of an eventual 8–0 defeat of Barbados. In the 2010 FIFA World Cup, Dempsey scored against England, becoming the second American, after Brian McBride to score goals in multiple World Cup tournaments. Dempsey became the first American player to score a hat-trick in the English Premier League in the 5–2 win over Newcastle United in January 2012.