I've just now noticed it and I always have a score of 0 in that section.
Towers/Inhibitors that you last hit.
I wonder if the enemy Nexus counts as a barrack... hmm...
Not towers, there is a different part for towers in the lower area. But if you got a last hit on inhibitors and possibly the nexus it shows up there
its cause barracks was the term used in DotA. Kill the "rax!" "Rax it!" or the capslock variant, "RAAAAAAAAX"
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