instruction: Given this paragraph about Novak Djokovic, how many majors titles does he currently hold?
context: Novak Djokovic (Serbian Cyrillic: Новак Ђоковић, romanized: Novak Đoković, pronounced [nôʋaːk dʑôːkoʋitɕ] (listen); born 22 May 1987) is a Serbian professional tennis player. He is currently ranked the world No. 1 player in men's singles by the Association of Tennis Professionals (ATP), and has held the top position for a record total 381 weeks, finishing as the year-end No. 1 an Open Era record seven times. He has won a total of 93 singles titles on the men's ATP Tour with titles comprising a joint-record 22 majors, a record ten Australian Opens, a record 38 Masters, a joint-record six Tour Finals, and a record 66 Big Titles. Djokovic has completed a non-calendar year Grand Slam in singles, becoming the only man in tennis history to be the reigning champion of the four majors at once across three different surfaces. He is also the first man in the Open Era to achieve a double Career Grand Slam in singles and the only player to complete the career Golden Masters in singles by winning all of the nine Masters tournaments, which he has done twice.
response: 22