Little and Large

As a short, heavier man I'm always interested in how shorter fighters deal with taller opponents, anyone that I fight is likely to be much taller than me.
Jeff Monson is an example of a fighter who, due to being short and having a shorter reach than most of those at his weight, has to close the distance a great deal during his fights.  If you watch his fight with Daniel Cormier Monson struggled to effectively close the distance to strike, clinch or get the takedown.  When you consider that Cormier is only a few inches taller than Monson you can only imagine the difficulties that Jeff had with the six-foot-eight Tim Sylvia who's nearly a foot taller!

Randy Couture, though nowhere near as short as Monson, also had to solve the conundrum of Sylvia's size at UFC 68. 

In a classic fight Couture used a lead inside leg kick to close the distance, unbalance and distract Sylvia before launching a big overhand right that took his opponent off his feet and to the canvas.  Although he couldn't finish the fight, Couture controlled and dominated the fight taking the Heavyweight Championship from Sylvia where Monson and Andre Arlovski failed.

Since I first saw this fight back in 2007 I've trained this combo though I've yet to have an opportunity to try it on a live opponent.  More importantly, it's a great example of being able to draw an idea from a real-life fight and incorporate it in your training.  Key to this, though, is not choosing a fighter who is very attribute based, simply, someone who does things that others can't - Anderson Silva, Jon Jones, BJ Penn, Shinya Aoki.  Pick the skill, learn it, drill it, use it.