A lady brought me a table to repair, which she inherited from her grandmother. It had fallen out of the back of a pickup during a move.
Fortunately, the top was solid oak and about 1-1/2" thick, which made the repair a bit easier than having to patch veneer.
The table only lost about 1" off its diameter, when done.
The hardest part of the repair was the large chip out of the face. If I just cleaned up the chip and inserted a butt jointed pieces of oak that, somewhat, matched the grain at the repair, the but joint would have stood out like a sore thumb.
By cutting the replacement chip in a V (an angle might have worked), I didn’t end up with a line 90 degrees to all the other grain.
When done, I used an Exacto to make marks I HOPED would imitate the grain brought out by the stain. It worked and even I have to work hard to find the repair.
Putting the depth of the replacement chip down to the router line also helps avoid a line showing on the side, but which would not have been nearly as problematic in the end grain.