Bike is a black canondale, with a bit of red on the front fork. It has a rear rack black bag. This is as close as I can get.
Biker hit on Lake Park Park just north of 51st -- bike is in the median with bent rear wheel, but biker not on site anymore. CPD caution taping off the area, mentioned blood on the ground. Cops say biker taken to UChicago hospital, probably in the last ~30 mins. Idk any other details.