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Koen Roos, The Dutch Flaghunter
- Koen Roos combines poker prowess with global travel, chasing flags in diverse tournaments.
- Flaghunting has taken him to places like Vietnam, where camaraderie and unique gaming experiences thrive.
- His journey is filled with challenges, friendships, and a relentless pursuit of new poker flags.
For Dutch poker player Koen Roos, the game isn’t just about cards and chips, it’s about countries. From the felt in Austria to the tables of Vietnam, the 36-year-old from Utrecht has made a name for himself in the niche but growing world of flaghunting: chasing poker cashes in different nations to get a flag on a The Hendon Mob player profile.
What began as a friendly home game at 17 has evolved into a passport-filling mission fueled by curiosity, competition, and a touch of obsession.
Chasing Flags and Final Tables with Koen Roos
Software engineer by day, globe-trotting grinder by night, Koen Roos has quietly built one of the most eclectic poker résumés on the circuit. Whether it’s making friends over street food in Asia, fighting through travel chaos in the Caribbean, or squeezing in yet another flag before year’s end, Roos approaches each stop with a mix of calculation and wanderlust.
We caught up with Koen during the Malta Poker Festival & Battle of Malta to talk about his path from Utrecht to the world stage, the camaraderie of the flaghunting community, and why the chase - not the cash - keeps him packing his bags for more.
This is how the conversation unfolded.
Poker Heaven: Who is Koen Roos off-the-felt?
Koen Roos: I am a 36 year old Dutchie, living in Utrecht. Software engineer by day, amateur poker player by night.
Poker Heaven: How did your poker journey begin, and when did you realize you were drawn to chasing flags?
Koen Roos: I started playing poker with friends when I was 17 years old. We would have microstakes homegames that would last until the early morning. Later we found out the local pub had some small stakes tournaments, and we soon discovered we were better than everyone else. In the first official tournament I played in Holland Casino, I managed to finish in 3rd place after a 3-way deal.
I took home 3300 euros, which was a lot of money considering I was still in high school.
Poker Heaven: Was there a particular event or cash that set off your “flaghunting” obsession?
Koen Roos: When I was playing a tournament in Austria, I was having a bite in the casino restaurant. An older gentleman asked if he could sit with me. We had a lovely conversation, mostly about food.
When I greeted him the next day, my friend said: “Oh I know that guy, that’s Casey Kastle. He’s the #1 flaghunter in the world.” Then he explained to me what flaghunting was, and I thought it would be a cool goal for myself.
Poker Heaven: How much of your year is actually spent traveling for poker?
Koen Roos: On average, I probably had 2 travel days a week this year.
Poker Heaven: Which poker stop has surprised you the most, and why?
Koen Roos: In Vietnam there was a super friendly poker atmosphere, everyone was just having fun and right away one of the players offered me a drink. The tables were big, so the dealers had craps rakes to rake in the cards and the chips. And I later found out you could even ask a waiter to buy you something from a street vendor!
Poker Heaven: What’s the toughest part of living out of a suitcase in pursuit of these results?
Koen Roos: It can get quite lonely on the road, especially if you’re travelling to countries where you don’t speak the language.
It’s always a blessing to run into other flaghunters or dutchies.
Poker Heaven: Have you ever had a flag chase go horribly wrong, like travel chaos or a brutal bubble story or something else even more mayhem-ish?
Koen Roos: In the Dominican Republic, the event was held on a resort. When I came back for my day 2 final table, security did not want to let me on the premise without clearance, even though I was put on the list days before. It took them 45 minutes to get clearance for me.
When I arrived, the final table had already been running for 15 minutes. Luckily I managed to win it, otherwise it would still have haunted me.
Poker Heaven: Roughly what percentage of the tournaments you play end up in a cash?
Koen Roos: I’m guessing I cash around 15% of my buy-ins. Mind you, a lot of countries only have around 10-12% ITM, sometimes even lower!
Poker Heaven: How do you keep your mindset sharp through all the bust-outs and near-misses?
Koen Roos: Just sleep it off and go again. I’m lucky to have only bricked 2 countries outside of Europe, so that definitely helps. When you keep making progress on your goal, it’s hard to be unhappy about it.
Poker Heaven: What’s your bankroll or planning strategy like for such a global schedule or do you just wing it?
Koen Roos: For Europe I made a tier list in terms of frequency of events in said country. For instance, Norway and Monaco only have one series per year, so these have to take precendence over a country like France.
For other continents, I just try to cram in as many countries as possible, because I don’t want to go back and forth between different continents. I got all my Asian flags in January, for example.
Poker Heaven: Do you approach smaller local events differently than, say, an EPT or WSOP stop?
Koen Roos: Yes, if the money is significant I will risk the flag to amass chips around the bubble. When I’m playing a low stakes tournament, I will just play very tight around the bubble to make sure I get my flag, even though it goes against my nature.
Poker Heaven: What’s your proudest or most meaningful cash so far, not necessarily the biggest one?
Koen Roos:
My proudest cashes are my EPT side event win and my WSOP Circuit Event win.
Not necessarily because they are among my biggest cashes, but because I felt in full control in those tournaments and played my A game. Also very happy with my cash in Paraguay, because I don’t feel like going back there.
Poker Heaven: You’ve met players from all over the world. Which encounters or friendships stand out the most?
Koen Roos: I’m glad I got to meet Casey before he passed away. I met fellow flaghunter Manoel in Costa Rica, and now we even plan trips together sometimes. Also Melvin and Lachezar were nice enough to invite me into their homes when hunting for the flag in their respective countries.
There are many other people I met and would have loved to get to know better, but it’s not always possible when you’re in a country for only a few days.
Poker Heaven: Is there a particular poker community or scene that really felt like home to you?
Koen Roos: New Zealand in general is just full of nice people and I loved playing poker there. If it wasn’t on the other side of the world, I would definitely visit more often. I also love the vibe in the Scandinavia. Iceland and Norway are definitely among my favourite stops!
Poker Heaven: Do you ever meet other “flaghunters,” and is there a bit of rivalry or camaraderie there?
Koen Roos: I meet other flaghunters quite often. If there is a country that hasn’t had a tournament in a while or there is a stop in a new country, I can count on the top people being there as well. For instance, 4 out of the 5 top flaghunters were in the Dominican Republic, because it had been 5 or 6 years since their last event. I sometimes even plan trips with other flaghunters Manoel and Aaron.
I’d say there’s mostly camaraderie between flaghunters, but there’s also a bit of healthy competition between myself and Dominick.
Poker Heaven: How many countries do you have left on your list and what’s your dream destination to play?
Koen Roos: For 2025, I still have Germany, Switzerland, Romania, Serbia, Bahamas, Wales and England on my list. After 2025, it’s basically any flag I don’t have yet. It would be nice if I could find some tournament in Fiji maybe, but I’ve heard good things about Mauritius too.
Poker Heaven: When the flag map is finally full… what comes next for Koen Roos?
Koen Roos: I don’t think I’m every truly done. Poker is still growing and legislation changes all the time. There might even be new countries or territories in 10 years!
Well who knows? We wish this flying Dutchman all the flags in the world. Keen on following his journey, check out the impressive Hendon Mob profile here.

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