What is the first sign that a fighter is getting old?

[jas]

Punch resistance? Legs? Stamina? Reflexes? Speed? Inability to pull the trigger?

Also, can you name when some of your favourite fighters showed that they were too old?

[New England]

legs......

[White_Knight]

Drug tests detect viagra in his system.

[Anthony342]

When they near middle age, reflexes and start losing to opponents you know they'd easily beat in their prime.

[rightsideup]

reflexes and chin

[Sugar Adam Ali]

Signs a fighter is getting old

reflexes
Punch resistance
Legs
Fighting in spurts
Cant get off timely shots
Lack of explosiveness
Balls lower past the trunks

[TBear]

When there is no longer a such thing as an easy opponent.