The Hornets announced Tuesday that an MRI revealed Richards has a right first rib cartilage fracture underneath his clavicle.
Richards (shoulder) has been ruled out for Monday's game against Minnesota.
Richards (shoulder) is out for Saturday's game versus the Celtics.
Richards racked up 24 points (10-14 FG, 4-7 FT), 14 rebounds, four assists, four blocks and one steal across 33 minutes during Wednesday's 138-133 win over the Raptors.
Richards closed Saturday's 114-106 loss to the Heat with 12 points (5-8 FG, 0-1 3Pt, 2-3 FT), 12 rebounds, one assist, three blocks and one steal over 35 minutes.
Richards registered six points (3-4 FG, 0-2 FT), eight rebounds, one assist and two blocks in 24 minutes during Wednesday's 110-105 win over the Rockets.
Richards finished Tuesday's 111-105 preseason loss to the Knicks with eight points (1-1 FG, 6-6 FT), three rebounds, one block and one steal across 18 minutes.
Richards (foot) was able to go through Tuesday's practice to open training camp.
Hornets coach Steve Clifford anticipates that Richards (foot) will be ready for training camp, Roderick Boone of The Charlotte Observer reports.
Richards (foot) has been ruled out for Sunday's game against Cleveland, Roderick Boone of The Charlotte Observer reports.