The Combatants all begin in random places in The Forest of Death, they have to search to find opponents, or they can use their time to make traps... whichever you feel is more in character
Teammates are not allowed to split up more than a 20 meters of each other
The First Team To Beat 3 Other Teams Wins
After someone is killed or sealed, if their teammate manages to stay alive for 15 minutes AFTER THEY HAVE BEEN BEATEN, then they get a RESPAWN -- If both team members die within 15 minutes of each other there is no respawn
Both Team Members Have To Be Killed(Or Sealed) For A Win To Be Official (For Example: Fu gets killed, but Karin hides and conceals her chakra and runs away for 15 minutes until Fu Respawns, the team that killed Fu doesn't get a win added to their score)
None of the characters have any prior knowledge of each other, how skilled they are, these will all be first encounters
I'm thinking Asuma and Neji or Sai and Yamato. I'll come up with something for both teams.
Asuma and Neji
Neji activates Byakugan to scan a vast section of the forest. After discerning the location of a nearby team he and Asuma will immediately go in that teams direction to defeat them. This is how they will find most of their enemies and ambush them within the forest of death.
Asuma Neji locates Anko and Sakura when he first activates Byakugan. Neji tells Asuma who it is and the two quickly formulate a strategy to ambush the enemy.
Neji get's the drop on Anko and Sakura and decides to fight the two of them alone while Asuma watches from a distance less than 20 meters. Anko notices the Byakugan and tells Sakura to back her up. Anko rushes Neji and the two begin a a taijutsu battle. Anko goes for the hidden snake hands and Neji severs them with Jyuuken and immediately does the 62 Triagrams on Anko. Should Sakura join the battle Neji will counter with the rotation pushing them both back, when they are pushed back Asuma will move in and assassinate one of them. He will use his wind natured chakra imbued knuckle knives to deal a fatal blow to either of them. (Preferably Sakura so that she can't heal Anko.) Then the two proceed to kill the person that is left alone.
After resting a bit Neji and Asuma are discovered by Shino's bug and yet another battle ensues.
Shino starts with a mass of bugs to which Asuma spews gunpowder from his mouth clouding the area. Taking Neji Asuma will clench his teeth causing a massive fiery explosion causing Shino to die. Thanks to quick thinking Kidomaru will survive because of his secretion armor. Neji will encourage Asuma to rest and a jounin level neji will defeat Kidomaru as he did when he was a child.
Now completely exhausted Neji takes some well needed downtime probably a few hours or so. After resting Neji will use his Byakugan to track down Karin and Fu whom have also tracked them down. Yet another battle starts.
Asuma solo's this fight easily, beheading Karin and beating Fu lividly.