One of my worst moments as a ref was while working the U.S. Open. One of my jobs was to take down the name cards for completed matches and put the new ones up for the next match. I was walking through the arena after coming back from a short break and saw a table with no one there and didn't notice any activity or cues nearby. The score on the wire was 10-9, so I assumed that the match had ended. I got the bridge and took down the name cards and returned the beads to 0-0, and went looking for the cards for the next match scheduled on that table.
When I returned both players were at the table staring at me. You know, the ones who had "completed" their match. I wasn't sure what to say, so I blurted out, "who won?" I was informed that the score was 10-9 and they had taken a break. Both their cues had been placed under the table, along with their cases. I quickly made my apologies and retreated as fast as I could, not noticing the spectators who were snickering at me. Later on, one of those spectators told me he and others had watched me, wondering what I was doing. No one said anything. They wanted to see what would happen when the players returned.