I do the same thing... I went 8 18 hole rounds and was working my way through my 9th round when I finally lost it. (I was playing a new course and I'm going to blame my lack of course knowledge. I mean, how dare they put a cart path right where my ball was about to land).

haha same thing made me lose my ball. hit cart path right into hazard. I do the same as you guys that was my 5th round with the same ball and I have played 3 rounds since that on the same ball again. Not big marks just a little paint coming off and a couple marks from bunker shots

haven't played more than 2 rounds with the same ball I always end up loosing them!! North East golf is tough!! Lol

19 holes tops!  I use the last ball played in the previous round to tee off and then substitute on No. 2. : )

Interesting concept; that is playing with the last ball for one hole. 

For me it all depends on what the ball looks like.  I would say no more than three rounds though.

Because I am not a wealthy person, I am forced to play every ball until I can longer smooth out the scuffs. IF it is going to interfer with putting, it is a lake ball, to be gotten by the kids

I could play cheaper balls, but I just like the feel of the NXT Tour S. ProV1 is my favorite.

Given the more durable nature of today's balls, I play them until I lose them. My record is 13 rounds and you can barely read Titleist on the ball. It was taken out of service and I still have the ball.
 

Usually 3 rounds at most. I like the looks and putting qualities of a ball that is not marked up in any way.

Only two rounds per ball, then it goes into a hugh sack with only Pro V's.

I use a new Titleist ProV1x on every round. So I guess 1 ball per 18, then it's donated to the range on the golf course.

ya, me too, play em till i lose em, i take pride in seeing how many rounds i can with the same ball

That's awesome. I wish I had the one I lost in the water filled green side bunker back..

i always take couple sleeves with me, i'll play one ball until it gets slit in it or scuffed up from the golf path. i like hitting a ball that has no slits or scuff marks on it.

No, I usually go through a sleeve, i always seem to scuff up a ball or two so i toss those. 

When it's going really well, I tee up a new ball on every par 5.

I try to get a round or 2 (at most) out of a ball.  Pretty much once it gets scuffed to the point that it can change the flight I take it out.

I will use the same ball until it's scuffed up or when my ball marks start to wear off.  Let's me know it has had enough...lol

I love seeing how long I can play the same ball. Most can go 3-4 rounds before being lost. I can remember playing one in 2008 for 8+ rounds.

One round tops, then it's off to the shag bag.

I'll retire a ball if it starts to get scuffed or scratched.  13 rounds is impressive though!

I will usually play 1 ball per round - on occasion will change after 9 holes to a new one. 

Usually until the golf gods think they need me and my Pro V1x to part (which imo is far too often!)

I will go up to 5 rounds on a ball and then retire it to a practice ball!

Typically one 18 hole round. If it's still in decent shape, I'll play it another 9. Otherwise it's going in the shag bag.

They've grown out a load of long rough at our place this year so i'm lucky if i get a full 18 out of a ball at the moment!

Wow I wish my ball stuck around that long :( longest 2 rounds of 18 holes tops usually 1-1/2 rounds and its pull out another prov but that's why they sell um by the dozen lol

When mine gets scrapes, any kind of marks, or nicks it goes out.  As long as it doesn't show serious wear, I'll keep playing it.

102 holes was the best I did this season with a Pro V1X.

1 round normally, 2 at an absolute max, i like a fresh Pro V1x on the 1st

After a round, a ball heads to my shag bag.

WW

Managed to win two events in a row with the same ball (once a +1  and once a -1)

After that I put the ball in my shelf to not lose it :)

I play my Pro V1 till I lose it or it gets scuffed bad enough that it won't putt well.  They bad boys are way too expensive to switch that often.  

When I'm in the groove I can go a round or two before losing a ball.   With that said, I will still play a Titleist regardless of how many trips to the golf store I need to make.

I have one of those older guy, not too long, but straight games. I rarely loose balls, and if not lost, after 2-3 rounds depending on condition, I will take the ball out of play. I have a bag of about 100 used Titleists. Don't need any more so I either give it to one of my pals, or leave it by a tee box for the kids to pick up.

I've been 10 rounds, 17 holes with one ProV1x. Lost it on the 18th hole of my 11th round. I will typically play with a ball as long as it doesn't have cart path rash or some other damage. It was still flying as well as the day I took in out of the sleeve.