Definition from Wiktionary, the free dictionary
- (tennis) In a set, an advantage equivalent to two breaks of serve.
2012 June 28, Jamie Jackson, “Wimbledon 2012: Lukas Rosol shocked by miracle win over Rafael Nadal”, in the Guardian:
- In the seventh game of the deciding set, one backhand came in at a thundering 99mph – this was followed by a lightening forehand return from Nadal's next serve to make it 30-love. A double-break would have left Nadal with no out-clause, but he clung on to pull the score back to 4-3.