10 titles.

1. Dexter (2006 TV Series)
Episode: Let's Give the Boy a Hand (2006)
No. Fuck! What's the matter with you? It's X's and O's.
2. The Last Ship (2014 TV Series)
Episode: Safe Zone (2015)
Sending your X.O. in here first, that some kind of game?
Your X.O. tried to sell me on that.
3. The Last Ship (2014 TV Series)
Episode: Fight the Ship (2015)
You heard my X.O. We've taken back our ship, this building is ours, and we're telling the people of Baltimore that your killing zone at Olympia is out of business. You have two choices: a trial or a funeral.
4. The O.C. (2003 TV Series)
Episode: The Groundhog Day (2007)
And what about all those e-mails? I mean, I've never seen so many X's and O's. And that would be... hugs and kisses, right?
5. Hawaii Five-O (1968 TV Series)
Episode: 3,000 Crooked Miles to Honolulu (1971)
Real name, Floyd F.X. O'Neal... Alias Foxy O'Neal, alias Francis Rogers, alias Harpy Wilton... Hometown Chicago, five arrests, three convictions... Embezzlement, bunco, and fraud.
6. Crimson Tide (1995)
We're not going to let this go down with the X-O and Helm.
That's right. You know how many checks that we have to go through to make sure that a message is authentic? The X-O agreed to those orders, now he just wants to throw them away they don't count?
Radio, X-O. Mr. Zimmer, get those communication systems back online now.
7. High School Musical 3: Senior Year (2008)
We've dug ourselves a hole, and the only way out is on each other's shoulders. No more X's and O's. Forget the scoreboard. Here's the number that means something... Sixteen minutes left in the game... the season... and for the seniors on this squad... sixteen minutes left in a Wildcats uniform.
8. U-571 (2000)
Well, since you're the X.O., you sir. Mr. Emmett, Mr. Larson, Mr. Hirsch and nine of your ship's company. The captain, of course, will remain onboard the S-33.
You're a first rate X.O., Andy. A damn good submariner. I know the men like you.
9. According to Jim (2001 TV Series)
Jim! B-I-R-D A-T S-I-X O-'-C-L-O-C-K!
10. Catching Faith (2015)
Last night, I wrote out this big speech. 'Bout what I was gonna say to you boys, you know what, then I thought "they understand football". You understand the X's and O's. But what I want to talk to you about today is that I'm proud of each and everyone of you. Not for what you achieved on the field, but what you achieved off the field. You've become a family, become a team. When we first started this we were just individuals. we learned to work with each other, and when your brother gets down, you picked him up. and I'm really proud of that. How this is a big day for us, big day for this town, we haven't had a championship here in well over six years. I'd like to win that thing. But if we don't; I want you to know that I'll be just as proud of you as if you had. So before you go out on that field, I want you to pray for a win, I want you to pray that your friends say safe, that the other team stays safe. And if you play like a family, like the team you've become, nobody's gonna stop you. Are you with me?
10 titles.