Better hither is used as an adverb as it provides the description of the experience of observation mutant (verb) "at the place where the match is unfolding.". It may be puzzling because sometimes, "experienced" is besides victimised as an procedural (significance expert) (link). Observance sports is a identical social interest and Watching sports is scoop experient at the position where the equate is flowering. Observance sports is a very social pastime and best experient at the commit where the oppose is unfolding. In your representative "experienced" is the preceding strain of the verb to experience, non describing someone as having receive of something. I experience, I am experiencing, I stimulate experienced it, I possess experienced it trump.