Sorry I don't know names or numbers: As we came onto the front straight, about 3/4 track width from the grass, closer to the wall, the crashed rider (bike-1) just ahead of me, about where the pit wall begins, turned aggressively right, toward the wall, like he had a problem or something. I moved left a bit but avoiding him was easy, we were going the same speed. Another rider (bike-2) coming from behind us both, from our right - between us and the pit wall, was going substantially faster than both of us. As bike-1 kept heading toward the wall, bike-2 made obvious adjustments. He headed closer to the wall to avoid bike-1 but there wasn't much room left. He moved his shoulders and body away from bike-1, leaned his bike far as he could to avoid bike-1, but clipped his right bar as he sped by. Bike-1 instantly fell right, toward the wall, on it's side, with the rider still in riding position. Bike-2 did not fall. He did all he could. That's the last I know
