I just found out what happened to him when I was looking for his next appearance, and Robby's website posted this:
"On Friday, September 24th, Robby underwent a successful surgery on his left arm that was broken due to a biking accident he had earlier in the week. Robby will now forced to be sidelined the remainder of the fall and 2010 ATP World Tour schedule he planned to play, but his anticipated recovery time for his left arm will allow him to get back into training for the Australian Open and summer schedule down under in the beginning of 2011. To get the latest updates on Robby and how his recovery is coming along, check back soon."
I agree that at least it is his left arm and not his right, so I pray for a speedy recovery. And I really hope Robby takes the bad things in life and tries to make the best of it and live out the rest of his career with a sense of optimism, positivity, and growth. With unfortunate circumstances like this, you have the potential to really come back stronger than ever, but it'll take hard work, dedication, and a love for the sport, along with support from others to really do this, and I hope he looks forward to fighting back! Get well soon, Robby!