Karadeniz was regarded as a prospect player, scoring 226 goals in 86 matches at youth levels. His youth performance pulled attention of various clubs across European leagues. In 2006, he signed a professional contract with Beşiktaş J.K.. At his professional season, he made his Super League debut against another Istanbul team Kasımpaşa on the 2nd matchday of the Turkish Football League 2007-08 Season as he had been substituted on for Burak Yılmaz at half time, making made him the youngest player ever to appear in a Turkcell Super League game at the tender age of just 16 years and 115 days. Just 6 days later, he scored his first goal for Beşiktaş on August 25th against Gaziantepspor in the 95th minute and made a big contribution to his team's 3 points. Karadeniz became the youngest scorer ever at Süper Lig at the age of 16. He made his UEFA Champions League debut against FC Zürich, making a substitute appearance in the 92nd minute, replacing Mert Nobre on 29 August 2007, where game ended 2-0 for Beşiktaş. On 3 November 2007, Batuhan came on as a substitute for Koray Avci in the 83rd minute against Fenerbahçe S.K.. He missed a very crucial chance for Kara Kartallar during the additional time as he picked up a loose ball and faked the keeper Volkan Demirel, subsequently he tried to shoot despite having had two teammates unmarked by his side and in the end he could not generate enough power on his shot and Edu cleared the ball away. Beşiktas lost the game with a final score of 2–1 to Fenerbahçe overtook Beşiktaş by one point. Later, he said "You be the king, you don't make someone else the king". Although he was criticized by the Turkish press that he should have assisted Federico Higuaín in the match, he stated that he had not seen his teammate at the time. During the January 2008 transfer window Beşiktaş wanted to loan him out to F.C. Köln in order for him to get more playing time, however the transfer did not take place due to FIFA rules for each football federation regarding age. According to the German Football Association Batuhan was classed as a minor and thus could not be transferred as he had a professional contract.
2010– : Later career
Batuhan was loaned out Eskişehirspor during the January 2009 transfer window. He started his loan scoring four goals in three league matches. At the end of the 2008–09 season Batuhan had an operation of his left shoulder, ruling him out of football for five weeks. In the summer transfer window of 2010, Batuhan has moved to Eskişehirspor with permanent deal. Then, he was loaned again to Beşiktaş. At the end of his contract he signed a new deal with Trabzonspor. After playing half of the season with Trabzonspor, he was loaned to Elazığspor. At the end of the season Trabzonspor terminated his contract. Before the beginning of the 2014–15 season he signed a new contract with Sivasspor. On 16 July 2019, Karadeniz reagreed terms to extended his contract Balıkesirspor. Karadeniz scored twice at 9th week fixtures of 2018–19 TFF Second LeagueRed Group game in which Balıkesirspor beat Niğde Belediyespor on 4-1 final score.
International career
Batuhan has risen through the ranks of the Turkish national team. At the Under-16 and Under-17 levels he scored a total of 43 goals in 53 matches. At age 17 he was called up to the Turkish Under-21 squad to play in the U-21 European Championships qualifiers, making him the youngest player in the team. He was first called up to the senior Turkish team by Fatih Terim during Turkey's 2010 world Cup Qualifiers in October 2008. He made his senior debut on 11 October 2008, winning his first cap in the Group 5 game against Bosnia & Herzegovina. When he was only 18 years old, he was named as part of the squad for Turkey's friendly matches against the Ivory Coast in February 2009 but was an unused substitute.
Playing style
Standing at nearly two meters, Batuhan has great aerial ability. He can play on the wings or in midfield as has scored many of his goals in this slightly more deeper position as a second striker.
