Every west player was in 3♦. Nobody in the club is particularly an expert or a beginner.
At my table, a heart was led to the king and ace, and a heart was returned, which I ruffed. I led a high diamond and, upon winning the ace, north led a spade, letting me take the finesse for an overtrick.
This was a bottom board. Everyone else made 11 tricks in a diamond contract, but how can this be?