Brought my clearly 50 year old family member here and because he didn't have his ID they didn't serve him. The idiocracy is visible and logic has no place here. And before you say following the law isn't stupid well when grandpa wants a beer asking for his ID is kind of stupid no matter what the government says lol read more

Before the new owners took over they had the NFL package so the fans would be able to go in at 10am on Sunday to watch the football games. Now the new owners don't want to pay for the NFL package so the sports bar opens at 12pm. SMH! This is a sports bar it should be open at 10am for all NFL GAMES. COME ON LETS GET THE NFL PACKAGE! read more

Friendly service, plenty of televisions playing sports, great air conditioning and cheap drinks. Tucked inside of a bowling alley, plenty of pool tables, and modernized juke box for music. read more

Bar tenders are friendly, place is newly revamped and clean, and drinks are at a great price. The bar is attached to a bowling alley and they also have billiards and darts on the first floor of the bar with a more collegiate feel on the 2nd story of the bar. read more

Best pour drinks at reasonable pricing. Friendly, only place in DB. Pool, darts and Trivia and bowling next door

What a great sports bar that has multiple pool tables, and electronic dartboard to keep you busy while hanging out with friends, having a few drinks. Most sports bar don't serve food, these guys do. And it was really really tasty. The bartenders are super cool, and make the best drinks. Would recommend this place for anyone. Locals or newbies are always welcome. read more

I've been coming here for years. Never disappoints. Casual. Divey. A fun night is for sure! Good happy hour specials. Pool, darts and a fun crowd! May go there tonight! Ahaha definitely recommend! read more

This place is a large two-story dirty dive bar. Its only for locals because you wouldn't want to come here as a new customer. Draft beer is OK, not working all the time and sometimes not as cold as it should be. Basic typical fried food. The owners definitely do not care about this place. They finally had to redo the bathrooms because they were disgusting. Too bad, this place could be really nice if the owners would just put a little money into it. All they really need to do is take a mop and rag and clean the place. read more

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I really enjoy coming to this place with my friends, but lately there has been so many knats around and even in our pitcher. We had to take one back because one went into ours half filled with beer still. It's pretty gross and annoying. I sure hope someone addresses this problem because I would hate to find a new spot. read more

Best place for a good beer and prices tones of room with pool tables... great place to watch games... thank you for the great service.

I totally love this bar. I am a Diamond bar local and there is not much night life here. Every time I come in I get greeted by familiar faces. I have even came here by myself just to unwind and run into people I know. Pool tables, darts and lotto games are my fave. There are always great drink specials. My go to neighborhood bar! read more

It is a great spot! I would hangout here, when I was a student at Cal Poly Pomona. This bar is adjacent to the bowling alley. In addition, this bar has several pool tables, a jukebox, and arcade games. So, I would come here with my classmates, and spend an evening here. I might visit this establishment again, once I am in the area again. read more

All i wanted to do was play some pool with friends But no since i wasn't 21(all my friends were) they said I had to leave by the security guard I know he was doing his job but I think he takes it to seriously read more

It's next to the Oak Tree Lane bowling alley and a few things around such as; Denny's, KFC, McDonald's, 7- Eleven, and gas stations other than that there is nothing much going on... This place has been around. It's divey and super casual. People who come here are not looking for posh or trendy! There are darts and pool tables. The bartender and crowd are super laid back and easy. It's that simple and gets the job done! Came here to bowl on a whim and got here before the group so decided to go in for a drink! Affordable, strong taste, and fast! read more

what is going on with the customer service here? I was waiting to close my tab but the bartender on the Bowling Alley side totally blew me off once her regular came to order! $0 tip. read more

This place is real chill. I came here late in the evening with a meetup group for some drinks and for billiards, which was very cheap. The interior is really big and there are many pool tables upstairs. You can get a good view of the ground floor and the TV screen from upstairs. The bar is downstairs, which served drinks and free pop corn. There may not be much in terms of ambiance nor something the "hip" young crowd would readily gravitate towards, this place has a sense of an old school bar, with wooden stairs and almost a retro 80's feel. The place is right next to a bowling alley, which is a plus. And, of course, plenty of parking. If you have a big group, this place is quite spacious. There's no doubt that the regulars feel right at home here as it's not too loud (at least when I was there) and everything about this place feel very chill. read more

This place is chill great for beer good pricing and nice to have a game of pool or bowl

Great friendly neighborhood bar. The food is much better than the average bar/pub fare and they have a great beer selection on tap. Service is typically friendly. Good place to get an after work drink. read more

I've been to the Oak Tree several times, and any other night I would have given it five stars. Generally, it's a great place to drink beer, play pool, and watch sports. But if you're a person of color, watch out. Tonight, I went with a group of friends to the Oak Tree. The bartender asked to see all of our IDs (which is odd, given that all of us are clearly over 40, but whatever). After we ordered and started playing pool, a security guard approached one person in our group (who is Mexican American) and asked him for his ID - even though he'd just shown his ID, opened a tab, and left his credit card with the bartender. Clearly, none of that mattered, because even after explaining this to the security guard, he insisted on seeing his ID anyway. My friend wanted to know why he was being targeted, especially since he was the only person of color in our group. They argued, and long story short, the security guard threw my friend out of the bar for not complying. It was a humiliating and demoralizing experience. We travel to Cal Poly Pomona frequently for work, and we've come here every time we make a trip to the area. Not anymore. Shame on you for targeting the one Mexican American person in our group. And please don't respond by saying that everything would have been fine if my friend had just shown his ID. He'd already shown his ID to the bartender, just like the rest of us in our group, and yet he was the only one who was approached by the security guard. I won't be coming here again. read more

I had a friend that just bought a house in Phillips ranch so I looked up a place where we could shoot some pool and this place poped up. First off Im gonna say I like pool hall and I mean pool halls, not bars that have pool tables. This place is more of a bar that has tables. Their tables suck. The felt is bad and the wall arent good. We even played ona table where the light was diaganol to the table. So on that note when I called them and ask if they have pool tables, I should of asked if they are a pool hall. My fault. not theirs. I will not be coming back because the drinks werent even cheap, and the table wasnt cheap either. The cues are that of a bar. So yea. read more

Ok...I'm in Diamond Bar, visiting my folks and the game is on...where do I go??? Of course I roll down Diamond Bar Blvd to the Sports Bar (or as we lovingly refer to it, " The Diamond Bar Bar") Standard Bar with a couple pool tables and the mandatory Ms Pac Man video game. I rarely get to roll through, but when I do I always have a good time. (Word to the wise, police officers hang out on in the parking lot waiting to bust you for a DUI, trust me on this one..) read more

What a great find!!!!! My colleague recommended we come here for an after work drink... it's a bar next door to the bowling alley. We walked in and there were 2-3 people sitting at the bar and a table with a couple guys. Don't expect any kind of ambiance or people watching at this bar - this is truly a dive bar. We ordered a Newcastle and Blue Moon (both on draft!) and some snacks (chicken strips and fries and some good 'ol nachos). Our bill came to less than $30 including tip for 4 beers and the two appetizers. Now that is what I call a Happy Hour!! read more

Ugh, this place can start just ok and end sad. It's old and run down and prices aren't great. They do have a decent amount of billiards and the biggest positive is that it's a place to continue after an hour of bowling. We last went there on a Friday night and all I have to say is you can only listen to bad karaoke for so long. read more

My friends and I used to go to the bowling alley next door but lately we've been coming here for drinks and darts. All pretty cheap. They advertise drink specials that can be as low as $2 a beer or $3 for a woo woo or rum and Pepsi. It never really gets all that crowded in there so service is always really quick. They also have pool tables but I don't recall playing so I can't say whether or not the tables were good to play on. There are at least 4 dart machines and each time I've been there, they were empty. The jukebox is ridiculous. It costs $1 for 2 credits and most of the current songs are... 2 credits. Ultimately, this bar is a little bit divey, but it's great for playing darts and getting some cheap drinks. read more

Wow, only one person reviewed this place. Come on people...before Chili's opened up, where else could you sit at a bar, relatively late, and have a sippy sippy of your favorite drink? Sure it's on the way east end of DB, but the drinks are cheap, they got some decent beers on tap, and pool tables and a juke box to let you strut along to dancing days while you show off your pool game read more

Bartenders are friendly, cheap drink specials, $5 per hour pool on weekdays after 8pm, and great place to have a casual outing at

Met two of my sisters here last night for some after work unwind time. The place itself is in serious need of an update starting with the carpet that I think was the cause of the musty moldy smell that hit you as soon as you walked in. The average age of the patrons here appeared to be about 60. The bartender was great and knows how to make a good drink. Pub food was mediocre. There were two kids there (ages looked to be about 7 and 5) who I think had no business being inside a bar. Granted we were only there for about 2.5 hours but the overall impression I got was "dive bar with a bowling alley attached". Service was friendly, drinks were good, but if you're looking for a more professional or upscale ambiance, this place is not it. read more

Love this spot! After work, I'm able to watch every sporting event since Oak Tree carries every network. NFL Sunday Ticket, Pac 12 Network, TWC Dodgers, and so on! Also, drink specials & great food everyday. Great events including Bands, Dj's & local Fundraisers. Plenty of pool tables & great atmosphere with the local regulars like myself. :) So come on down to check it out! "Shaky" Dave Lomba read more

I have been going to this place for years, not because it's fancy by any means, but rather because it is one of only two bars in the city of Diamond Bar. Once you walk in here, the first thing you think to yourself is 'Man, this place probably hasn't had any renovations in over 30 years.' That's probably because it's true! Anyways, once you start frequenting this place, you notice the same people and the same stories begin to circle around. You hear about so and so's golf game, someone fixing their plumbing, someone playing the resident trivia game, someone talking about how many women he's been with lately, someone talking about their favorite sports team, etc. etc. etc. You then think to yourself, 'Man, what did I do to get myself in here?' But, in reality, isn't that what people talk about at any bar, sportsbar, restaurant bar, etc? Yes, and thus it isn't that lowly of a place. Now, on to the drinks. They are cheap, extremely cheap. There are weekly specials on a certain mixed drink that will cost you $2.50 each. This could be a screwdriver, cranberry vodka, margarita, etc. The people who work there are all extremely friendly, so that is never a knock on the place. I rated this place a 4 because it's always a fun time but it is your local hangout and will never compete with higher end places where drinks cost more and the food is better. I will, however, leave you with a fantastic story to wrap all this up... You are going to get a kick out of this. There is a guy at the bar who looks like Lou Diamond Phillips, who goes by the nickname Zeus. On Saturday night, after the place had closed, the owner got a call from his alarm company letting him know that the alarm went off. He got up out of his bed and went to the bar himself, but told the alarm company to not call the cops because, more often than not, one of the after-hours janitors left the door ajar or something to that affect. (They have a janitorial service that comes in every night between 2-3am to clean the place up.) So when the owner gets there, he notices that all the doors were perfectly closed and none of the janitorial staff was there. So, by himself, he walks around the entire place and finds nothing suspicious. Nothing had been stolen, broken, out of place, etc. A few days later, on Tuesday of this week, he finally gets access to the surveillance video from the weekend. He is sitting in his office and he sees this little man walking around the place in the video and low and behold, it is this Lou Diamond lookalike. He has been staying upstairs inside the bar for god knows how long. He was caught walking around the bar and bowling alley in the middle of the night on the video!!! In case you were wondering, he would stay upstairs in some hidden area until people started coming into the bar and then he would come down acting as if he had been there for a while and went upstairs to just check it out. Basically he would just try to fit in without anyone knowing he had been there the whole night. That same day they saw the video, Lou Diamond came in for a beer. One of the waitresses told him that they are not going to press charges for breaking and entering or trespassing but he is no longer welcome in the bar, bowling alley or parking lot. There you have it, the oak never ceasing to amaze us. read more