A few years ago I had that same problem - my match was for 2 PM - and the on the chart, the 2 looked like a 7 - so my opponent wasn't there at 2PM.
I told Robb Saez to run to the hotel and get him - because I genuinely felt bad for the guy because I also read the match time as "7 PM" ...
I'm not sure who did the chart that day (either Luc Salvas, Scott Smith, or Charlie) but the handwriting is hardly legible - and it gets confusing. I'm pretty sure its the same people marking this flow with their chicken scratch..
It sucks that both guys - Two Champions - got forfeited. In the end it is always your responsibility to know when you are supposed to be there, but writing "11 or 1" on the match time is kind of strange.