When Big Jimmy and Tom fight during their fencing match, they knock over a table holding several dozen bottles of water. From the sound the bottles make and how they bounce, it is apparent that the bottles are all empty.
Before the closing credits, Big Jimmy receives an award for Greco-Roman wrestling. However, the banners in the background are the same ones seen earlier in the episode during the fencing matches. They obviously just recycled the fencing match set and used a tighter camera angle.