Picking when and where to fight is something to consider when you're chasing suspects, as well. If a suspect's capture is not in question, think twice about doing that flying tackle on his ass at the first available opportunity. It might be worth waiting until he gets to the open field as opposed to tackling his ass on the asphalt.
If the guy is about to scale a fence, you might want to consider letting him get his hands on it before grabbing him. His hands will be occupied, he'll be off-balance, and gravity has a way of rattling his cage when you drag his ass down. It's one time when the high ground is more of a liability. Otherwise, you're apt to face off against a guy whose footing is just as solid as yours and whose desperation is similar to that of a cornered animal.
Of course, this might be idealistic B.S. on my part. We've all seen the post-pursuit storm-trooping of suspect vehicles when they finally came to rest, and a good many cops are not only too happy to go hands-on with an SOB such as some rodeo wrangler (if someone's sitting by with a stopwatch, so much the better).
Look, it's great to be a wrestler or a great puncher (although Mike Siegfried's forthcoming "Winning Edge" column might make you want to re-think punching suspects with your fists), but remember to keep the advantage by fighting on your home turf.
Home is where you make it.