Antonis Fotsis (alternate spelling: Antonios Fotsis, Greek: Αντώνης Φώτσης; born April 1, 1981 in Maroussi, Athens) is a Greek professional basketball player. He is a 2.09 m (6 ft 10 ¼ in) power forward. He currently plays with Olimpia Milan and is the captain of the Greek national basketball team.

Fotsis began his career as one of the biggest European prospects. He is a good shot blocker, a top offensive rebounder, and an excellent 3 point shooter, especially for a power forward. He is very physical on the defensive end due to his elite athleticism. Fotsis is also the captain of the Greek national team. He is considered to be one of the best Greek basketball players of all time in the power forward position.

Fotsis began his professional career in 1996 with the Greek A1 League club Ilissiakos. He quickly earned a reputation as a very talented young player when playing in senior national team. He then transferred to the Greek club Panathinaikos (PAO) in 1997 just at the age of sixteen. It is a fact of significant importance that he started his career as a point guard and later moved to the small forward and then power forward positions. Due to his early guard playing status, he was later always recognized as one of the best power forwards in Europe, regarding basketball technique. While being the most dominant-youth aged talent in Greece at the time, he twice participated in the Nike Hoop Summit All-World Team (1998, 1999). He got little playing time in his first 2 seasons with Panathinaikos, but he managed to become one of the team's key players during the 1999-00 season. With Panathinaikos, he won the Euroleague Championship that same season while being barely nineteen. One year later, he became a starter on the Panathinaikos team that made it to the FIBA SuproLeague finals.

Dark horse is a term used to describe a little-known person or thing that emerges to prominence, especially in a competition of some sort or a contestant that seems unlikely to succeed.

The term began as horse racing parlance. A dark horse is a race horse that is not known to gamblers and thus is difficult to place betting odds on.

The earliest-known use of the phrase is in Benjamin Disraeli's novel The Young Duke (1831). Disraeli's protagonist, the Duke of St. James, attends a horse race with a surprise finish: "A dark horse which had never been thought of, and which the careless St. James had never even observed in the list, rushed past the grandstand in sweeping triumph."

The term has been used politically in such countries as Peru, Philippines and United States.

Politically, the term reached America in the nineteenth century when it was first applied to James K. Polk, a relatively unknown Tennessee Democrat who won the Democratic Party's 1844 presidential nomination over a host of better-known candidates. Polk won the nomination on the ninth ballot, and went on to win the presidential election.