What is a considered a good second serve percentage?

[850beast]

Hi guys, I am doing a statistics paper on whether second serve winning percentages have an effect on the number of match wins. I will be taking data from the 2013 year. I will be doing regression analysis and chi-squares tests. For, chi squared test of independence, the null hypothesis is the second serve winning percentage is independent of match wins. My categories are good average and low second serve winning percentage. So what do experts consider a good second serve percentage and what would be a bad second serve percentage?

http://www.atpworldtour.com/Matchfacts/Matchfacts-List.aspx?c=3&s=0&y=2013 This is where I am getting the data

 

[maggmaster]

Over 95% although my coach has recently been having me hit my second more aggressively embracing what he calls " Productive double faults"

 

[WildVolley]

So what do experts consider a good second serve percentage and what would be a bad second serve percentage?

http://www.atpworldtour.com/Matchfacts/Matchfacts-List.aspx?c=3&s=0&y=2013 This is where I am getting the data

What do you mean by second serve percentage? The statistic you quote is of second serve points won.

Second serve percentage can also relate to number that go in versus double-faults. Or what % of serves hit are second serves, which is just another way or restating the first serve %.

 

[850beast]

What do you mean by second serve percentage? The statistic you quote is of second serve points won.

Second serve percentage can also relate to number that go in versus double-faults. Or what % of serves hit are second serves, which is just another way or restating the first serve %.

I mean the percentage of second serve points won.

 

[LeeD]

Percentage of second serves WON only means you have great groundies and volleys that allow any wierd unwieldy serve to work just fine.
What's important is percentage of second serves IN that don't set up the opponent for a winner.
For instance, Rafa playing against YOU, he can feed his second serve to your favored side exactly the height, depth, spin, and placement you like, and YOU WILL LOSE the point 95% of the time.

 

[goran_ace]

Hi guys, I am doing a statistics paper on whether second serve winning percentages have an effect on the number of match wins. I will be taking data from the 2013 year. I will be doing regression analysis and chi-squares tests. For, chi squared test of independence, the null hypothesis is the second serve winning percentage is independent of match wins. My categories are good average and low second serve winning percentage. So what do experts consider a good second serve percentage and what would be a bad second serve percentage?

http://www.atpworldtour.com/Matchfacts/Matchfacts-List.aspx?c=3&s=0&y=2013 This is where I am getting the data

Is that last column the # of matches won or the # of matches played?

Also, why are you comparing percentage of 2nd serve points won to the # of match wins? Wouldn't it be better to compare that to winning percentage? A guy could get more wins by way of playing more matches, not necessarily related to how well/poorly he serves.

 

[LuckyR]

Hi guys, I am doing a statistics paper on whether second serve winning percentages have an effect on the number of match wins. I will be taking data from the 2013 year. I will be doing regression analysis and chi-squares tests. For, chi squared test of independence, the null hypothesis is the second serve winning percentage is independent of match wins. My categories are good average and low second serve winning percentage. So what do experts consider a good second serve percentage and what would be a bad second serve percentage?

http://www.atpworldtour.com/Matchfacts/Matchfacts-List.aspx?c=3&s=0&y=2013 This is where I am getting the data

This would be very different from the ATP to the WTA. Lots of breaks and return winners in the WTA, not so much in the ATP.

 

[Manus Domini]

1} Good second serve percentage as in percent points won, or percent it gets in?
2} For what level?
3} It depends on the player and the situation. Sampras, for example, might hit a bunch of DFs, but he could always get a second serve in when it mattered. Are you talking about clutch points, or a general, non-key point?