Live blog: 2010 Penn Relays Day 3

Saturday promises to be another action-packed day at the Penn Relays. (Ron Cortes/Staff Photographer)

I don't know if any of us can really visualize just what Franklin Field is going to be like today.

Ever since it was announced that Usain Bolt would be here, everyone's been trying to figure out just how big the Saturday crowd will be. Now, we get to find out.

I've already heard rumors that Relays officals expect to sell out of programs this morning. My guess is that five of the six sections of Franklin Field will be full: the upper and lower decks of the south and east ends, and the lower deck of the north end.

The finish line isn't visible from the upper deck of the north side. But people might come and watch on the video screen anyway, just to say they were there.

Penn Relays director Dave Johnson told me yesterday afternoon that as many as 57,000 people can jam into Franklin Field. That's a much bigger number than what I always had been told was the capacity: 52,598.

Whatever the capacity really is, I was here the last time the Saturday attendance topped 50,000. It was an incredible sight. Today's crowd has to exceed 51,159 to break the three-day attendance record of 114,194. That was set in 2006.

At this point, I don't think you can rule anything out - on or off the track. What do you think will happen?