By limiting the sparring to a certain technique like the Single Leg Takedown only, it allows us to drill and practice this often-used technique with more focus and intensity.
By the time we were allow to spar like normal, most of us were able to apply those MMA moves smoothly. And I managed to do a few single and double leg takedowns, something that I've not been able to do whenever I spar in the past. By understanding the mechanics and flows of a particular technique through tennis match sparring, we improve our timing and execution of that technique. Tennis match sparring allows you to break down a technique and help you to understand why you fail to execute it earlier. Of course, there are other factors like physical attributes and fight plan but that's for another entry.
Note to self: remember to check distance, setup or distract, level change then lift up.