Well judging from the definition of sport.... If definition 3 is anything to go by, then yes it can be considered a sport...
Sport
sport  /spɔrt, spoʊrt/ Show Spelled Pronunciation [spawrt, spohrt] Show IPA
–noun
1. an athletic activity requiring skill or physical prowess and often of a competitive nature, as racing, baseball, tennis, golf, bowling, wrestling, boxing, hunting, fishing, etc.
2. a particular form of this, esp. in the out of doors.
3. diversion; recreation; pleasant pastime.
4. jest; fun; mirth; pleasantry: What he said in sport was taken seriously.
5. mockery; ridicule; derision: They made sport of him.
6. an object of derision; laughingstock.
7. something treated lightly or tossed about like a plaything.
8. something or someone subject to the whims or vicissitudes of fate, circumstances, etc.
9. a sportsman.
10. Informal. a person who behaves in a sportsmanlike, fair, or admirable manner; an accommodating person: He was a sport and took his defeat well.
11. Informal. a person who is interested in sports as an occasion for gambling; gambler.
12. Informal. a flashy person; one who wears showy clothes, affects smart manners, pursues pleasurable pastimes, or the like; a bon vivant.
13. Biology. an organism or part that shows an unusual or singular deviation from the normal or parent type; mutation.
14. Obsolete. amorous dalliance.