Scrappiest

adjective

1. Consisting of scraps; fragmentary; lacking unity or consistency.

   "That was a scrappy lecture."

2. Having an aggressive spirit; inclined to fight or strive.

   "He's a scrappy dog and will charge at you if you taunt him."

3. (Of a fight) characterised by lots of ungainly or wild punches, grabs, wrestling, etc.
4. (Of a sports match) characterised by awkward or clumsy play.