This deal from the opening round saw many double-digit swings:

On a bad day, you might go down in 3NT after a diamond lead, a fate that befell several players, including one multiple world champion.
6[C] was attempted several times, but when a diamond was led no-one had enough information to get the trumps right.
A couple of declarers were favoured by the lead of the [S]Q, after which only the overtrick was at issue.
At two tables, one in the Venice Cup, the other in the Bermuda Bowl the opening lead was a heart. Declarer wins with the king and cashes the top trumps. When the [C]Q declines to put in an appearance you play a third round pitching a diamond, win the likely diamond exit, cash the [H]A, ruff a heart and continue with two more rounds of trumps to reach this position:

When declarer plays the last trump South must part with a spade. Having done its work, the [H]9 is discarded from dummy and declarer scores three spade tricks. In the match between Sweden and Israel the latter made 12 tricks after a diamond lead – but they were only in 5[C], and Sweden’s Fredrik Nystrom (partnering Johan Upmark) followed this line to pick up a big swing.
Alas, the other declarer could not find the winning line.


