If you always got A's in your science classes at school, this is an example of when you excelled at science.
He especially excelled in comedy.
Jackson considered feeding a sport; one he excelled at.
You've always excelled at everything you've done.
Attica was famous for its olives and figs, but general agriculture excelled in Peloponnesus, where, by means of irrigation and drainage, all the available land was utilized.
He was identified with the Hudson River School, and excelled in pictures of autumn scenery.