It looks as if you have been using it in the indoor nets and "tapping" the ground with it quite hard - one of the reasons it may have split is because it may need a little more oil around the toe and it is still a little soft around the toe and could do with a little more knocing in. This also looks like "cheap ball" damage
... spent plenty of time (but obviously not enough) on knocking in the edges and toe. It was just a full ball and unfortunately the bat has died!
I wouldn't even bother repairing it, the crack is tiny and will not need a repair unless it gets worse, if you do repair then just fill with super glue or wood glue, just to fill it, no clamping required in my opinion.
Mate, toe does not look knocked in at all. The edges are still sharp, you should round them off. Also, like someone else said, the toe looks quite dry. I'd say glue and clamp it first. Leave it clamped for a day or two. Then oil the toe 3-4 times. Then knock it in properly.Search the forum for knocking tips, there's been plenty of posts already...