In twitter account of Mayweather he released a note at: http://twitter.com/MAYWEATHERMANIA/ his twit says:
"Marquez says hes goin after my ribs but theres no weakness in MONEY MAY. Only ribs he’ll b diggin n2 will b at Outback after I take him down"
The Marquez - Mayweather fight originally scheduled in third week of July but was moved in September 19, 2009 at 9PM ET / 6PM PT at MGM Grand Arena due to Mayweather's rib injury which he acquired during the result of his training.