Even though Batman is the pinnacle and the epitome of the master martial artist, there are other things the Bat knows. Ted Grant, the Wildcat, was Bruce Wayne's first teacher in combat. From the all time greatest heavy weight champion Batman also learnt many things along with the noble art of pugilism. Even though boxing does fall under the martial arts, there are many other forms of boxing, from normal back alley fights to completely bare knuckle fights in illegal rings. Ted Grant made sure that Bruce Wayne could walk into the ring and that he could walk out again. Ted Grant taught Bruce everything, from a correct way to breath, to take a punch and to throw a punch, he's taught him to train and train others and in many ways, Batman's boxing ability is old school and very devastating. Of course every boxer and a fighter has their special own style, the way they move, breath, throw punches and so on. Ted Grant taught Bruce to read these and thanks to Batman's knowledge in the art, he can be quite sure where the fighter has trained and by who. Just like he can do with the martial arts, even though with Boxing he cannot be so precise.As Bruce Wayne, he enjoys the art and the fine sport of pugilism and is quite well versed in its history, customs, different athletes and of course the promoters. Of course this in many ways is a shroud for Batman to use, but he also likes watching it since there is no situation where he could not learn something new. Also this 'hobby' gives him a way into the city's and the world's underworld and this way he can hobnob with the bosses, talk and be interested in the sport, while gathering information on the real actions of the bosses. .