Maybe not, but if your not an expert ,better too shoot multiple pictures of the event rather than be disappointed that you didn't get any good ones to keep.
That is really not a good way of trying to get the "Money Shot". You should initially familiarize yourself with the camera so that you can avoid the "Shoot and pray" method.
You do what to avoid having the aperture at "lower" values (F1.8-F5.6) as it will promote a shallow depth of field. So with that said, when you shoot at "Higher" numbers F8- and up you are closing/narrowing the aperture and allowing for more depth of field in the images and will help avoid those blurry corners. You should try this at home by going into "A" Aperture Priority and playing with the F values so that you understand how this plays part into depth of field.
Please do not persecute me for my description. Just trying to put this into a perspective for someone just getting into the hobby. But the lower value numbers and higher value numbers are switched around and read backwards in actual photography terms for the aperture.
Also imagine that you are looking at a room. When you have your eyes wide open (wide open aperture), you can get a very clear image of what is directly in front of you, and everything else in the background blurs or is out of focus. When you squint (narrowing of aperture) you are able to focus onto an item that would have some distance. That would probably be the best way of describing this.
and Redtail, when you start cropping photos you are eliminating those edges that the OP is speaking of. Just sayin.