Federer started...

2-6 v. Murray and currently holds a winning record

2-7 v. Hewitt and finished with a winning record

1-6 v. Henman and finished with a winning record

0-3 v. Agassi and finished with a winning record

0-5 v. Nalbandian and finished with a winning record

Nadal started...

1-3 v. Gonzalez and finished with a winning record

1-3 v. Berdych and finished with a winning record

1-4 v. Hewitt and finished with a winning record

0-3 v. Blake and finished with a winning record

Djokovic started...

0-2 v. Verdasco and currently holds a winning record

2-5 v. Tsonga and currently holds a winning record

6-13 v. Federer and currently holds a winning record

4-14 v. Nadal and currently holds a winning record

Takeaways:

• Federer: Consider how many greats had his number early before he adjusted and completely annihilated them

• Nadal: Never trailed anyone by more than three wins, ever... An extraordinary feat

• Djokovic: Holds the two most impressive H2H turnarounds ever