DarthFed said:
^ Not ever going to be effective against the big boys even if hit well. To be an effective approach shot against guys like Djokovic and Nadal you need to get them on the full run. Chip and charge gives them too much of a target and they will get to the ball with time to spare. Even the ones with decent depth usually won't get the job done.
Actually, Roger successfully executed chip and charge a few times against Novak in
Wimbledon final (see replay of first set in particular, that he won). But, I don't have the
stat of how many times he tried and how many times it worked. If it does not work
at least in 50% of attempts, one might say it is not a good idea; on the other hand,
it might actually help the overall game to mix it up.