"Wristspinners will have one advantage if you see because it's going to be very difficult to pick the seam [with black stitches] of the pink ball," Harbhajan told PTI on Tuesday. "When a finger spinner bowls, the ball is released with seam so that there is turn and bounce. When you are bowling the googly, the seam will be scrambled and very difficult to pick."
Talking about the effect of dew later in the evening, Harbhajan explained: "A lot of people think that the ball will be like a slippery soap bar as it happens with the white ball in day-night games. It's not the same. The white ball becomes slippery because the white lacquer goes off and the ball gets wet.
"With extra lacquer, pink ball's skin won't get wet but the stitches will be very soggy. And therein lies problem with finger spinners.
"More lacquer means that you will not have a good grip on the ball, especially fingerspinners, and the ball starts skidding," he said. "In 50-over or 20-over cricket, whenever the ball gets wet, you can just alter the length a bit and let the batsmen play on back foot, allowing those singles. But in a Test match, you have to pitch it up. Now landing six deliveries on one spot while trying to grip a wet seam can be a challenge because trying the ODI length will be easy meat for batsmen."
Interesting quotes from Harbhajan there.