Bottom of the pool (vinyl liner) in each corner at that end. The first tear is about 3 inched long but the second one is a puncture with tears going out in 4 different directions, about 2 inches each.

I checked my brush and couldn't see how it would have torn the liner. I just found a small metal wire in the pool in that area. I have to assume it was in there and I pushed it into both corners with the brush. I'm ordering a new liner at this point. The current one is about 8 years old and probably had a couple seasons left in it before this fiasco.