Light bromance? "We must form a battery... only HE can catch my pitches..." + all the crying and holding hands, lol. About the only thing that detracts from the sho-ai theme is the chemistry Abe has with the coach/manager.
Much as I enjoy the guy-guy innuendo though, the intergender interactions are fun too. I can't be the first to want to ship these two for example:
Plus there's always girl-girl shipping.