Five sentences related to a topic are given below. Four of them can be put together to form a meaningful and coherent short paragraph. Identify the odd one out. Choose its number as your answer and key it in.

1. Over the past fortnight, one of its finest champions managed to pull off a similar impression.

2. Wimbledon's greatest illusion is the sense of timelessness it evokes.

3. At 35 years and 342 days, Roger Federer became the oldest man to win the singles title in the Open Era — a full 14 years after he first claimed the title as a scruffy, pony-tailed upstart.

4. Once he had survived the opening week, the second week witnessed the range of a rested Federer's genius.

5. Given that his method isn't reliant on explosive athleticism or muscular ball-striking, both vulnerable to decay, there is cause to believe that Federer will continue to enchant for a while longer.