Unfortunately, I could see Ritzenhein opting to line up at the start for the Olympic marathon and then turning in a DNF due to a previously undisclosed injury.
This is where my concern lies. Khannouchi would be a very capable fill-in if Ritz isn't ready to go but is Ritz going to say he's not ready to go and give Khannouchi the chance? Hopefully, Khannouchi is hearing this news and preparing as if he will be running in Beijing. Even moreso, hopefully Ritz will be willing to bow out if he's not truly ready to go.