Drake and Kendrick Lamar are two of the most important artists of this generation. The two have toured together, appeared on one another’s albums, and paid respect to each other in interviews. But the same things that have brought them together have also torn them apart.

Over the past three years, Kendrick and Drake have attempted to outsmart, outwit, and outplay each other as they both compete for hip-hop’s throne. Kendrick’s recent, and ambiguous, shots on “The Heart Part 4” seem to be the latest move in the duo’s long-running cold war. With Kendrick’s fourth album DAMN. dropping on Friday, Genius compiled a timeline of he and Drake’s under-the-radar rivalry.

August 2013: Kendrick Takes The First Shot On “Control”

Fresh off good kid, m.A.A.d city and a slew of guest features, Kendrick made his biggest statement to date on “Control,” name-checking 11 of his peers and claiming the throne as his own. While most artists mentioned considered it an honor, Drake took offense to Kendrick’s call to arms, prompting a string of responses.

September 2013: Drake Responds To “Control” On Wax And In The Press

Drake didn’t respond on wax until he dropped “The Language” on Sept. 24, six weeks after the release of “Control.“ Drake reiterates his feelings from recent interviews and seems to call Kendrick’s verse “uninspiring.” The shots continue later in the verse, as he seems to claim Kendrick may be “just talking bullshit.”

He also took the opportunity to call out Kendrick during an interview with Billboard Magazine:

It just sounded like an ambitious thought to me. That's all it was. I know good and well that Kendrick's not murdering me, at all, in any platform.

To this day, Drake still hasn’t said Kendrick’s name on a song.

October 2013: Kendrick Claps Back At The 2013 BET Awards

During the 2013 BET Awards Cypher, Kendrick poked fun at Drake’s “sensitive” raps with a reference to the title of his rival’s third album, Nothing Was the Same. He went on to win Best New Artist and Best Male Hip-Hop Artist that night, too.

December 2013: Drake Has The Last Laugh Of The Year

On “Shit (Remix),” Drake acknowledges Kendrick’s game of cat and mouse. Shortly after the song was released, Drake appeared on the cover of VIBE. Because the conversation took place before “Shit (Remix)” was released, it made Drake’s comments seem prescient:

Mind you, I never once said he’s [Kendrick] a bad guy [or] I don’t like him. I think he’s a fucking genius in his own right, but I also stood my ground as I should. And with that came another step, which then I have to realize I’m being baited and I’m not gonna fall.

October 2014: Kendrick Breaks His Silence

On “The Language,” Drake bragged he was “the kid with the motor mouth”—i.e., he had the best raps. Kendrick responded, dismissing Drake’s claim, and later raps: “Endin’ our friendship, baby, I’d rather die alone.”

February 2015: Drake Hits Back

This is a reference to “Control” and Drake’s run-in with Kendrick at the 2013 VMAs. Since this line was delivered 18 months later, it seems Drake was still hung up on the name check.

Drake addressed his run-in with Kendrick during a 2013 CRWN interview:

I know that verse had no malice behind it, because I saw him five days later at the VMAs and it was all love. He didn’t come on there in some wild ‘I’m in New York, fuck everybody, don’t look at me.’ It was one of those things, I almost wished he had come in there on that shit, because I kind of lost a little respect for the sentiment of the verse. If it’s ‘really fuck everybody’ then it needs to be ‘fuck everybody.’ It can’t be halfway for the sake of the people.

If you got hung up on Drake’s emasculation of Tyga on “6 PM In New York,” you might’ve missed a possible nudge at Kendrick Lamar. Drake references good kid, m.A.A.d city’s “Money Trees” and Kanye West’s “Blood On The Leaves,” showing he’s pretty much ready for war.

March 2015: Kendrick Makes A Prophetic Jab

In an interview with Rob Markman, Kendrick avoided naming the target of these lines:

As a new artist you have to stand behind your work, and you have to really, truly honor the code of hip-hop, as a new artist. I’m not mentioning the older guys that’ve already laid down the foundation.

At the time, it was anyone’s guess as to who the lyrics were directed at. However, once Meek Mill accused Drake of using Quentin Miller as a ghostwriter, many fans made the connection and wondered if Kendrick knew something they didn’t.

June 2015: Drake Shoots At Conscious Rap

Drake insists that he, too, could play in Kendrick’s lyrical arena, nodding to his mixtape days of rhyming alongside MCs like Elzhi and Little Brother. Then the uppercut: Drake conducts his own popularity contest. “I’m in the club every time that they play the competition / If they even play the competition and I seen the response they get,” he raps.

August 2015: Kendrick Goes Back To Back

Just when the Drake and Meek Mill beef was getting hot, Dr. Dre dropped Compton and let Kendrick on the loose. On “Darkside/Gone,” Kendrick flips Drake’s hook from “Energy” and turns the attention back on the 6ix God.

In the most aggressive shot thus far, Kendrick refers to Drake’s burial with “They liable to bury him, they nominated six to carry him” and counters his marine imagery on “Shit (Remix),” claiming that although Drake might be “killing the hooks,” Kendrick’s at the top of the food chain.

January 2016: Drake Gets Obama Involved

In January, YouTube star sWooZie asked President Obama to predict whether Drake or Kendrick Lamar would prevail in a lyrical battle. The Pres sided with the American, which should’ve come as a surprise to no one—he hosted the Compton MC at the White House and chose Kendrick’s “How Much A Dollar Cost” as his favorite song of 2015. Shortly after, Drake stopped short of sniping at the leader of the free world, but took the opportunity to remark on the sturdiness of his own wordplay.

March 2016: Kendrick Baits Drake In Anticipation Of Views

While “Drake you down” marks the first time Kendrick said Drake’s name on wax since “Control,” it wasn’t a shot, though another lyric on “Untitled 07 | 2014-2016” may have been.

June 2016: News Leaks About A Destroyed Interview

Former NFL star Marcellus Wiley revealed on his ESPN radio show Max & Marcellus that he was witness to either Drake or Kendrick (he wouldn’t reveal which) taking major shots at the other on camera. Unfortunately, the manager of the rapper in question swooped in to nix the whole thing before it aired, although it’s worth noting that Drake appeared in the ESPN studios soon after “Control” dropped. Here are the details:

All I know is there was a beef, and all I know is I was witness to when the beef would have ignited to proportions we have not seen since Ja Rule/50, maybe even Ice Cube/N.W.A. Like it went there. But that was destroyed from everyone’s property. That was destroyed, that interview, that moment was destroyed. That’s all I’m gonna say. But I was there and I heard the shots fired.

March 2017: Kendrick Sons An Unnamed Rapper

Although he doesn’t drop any names, many fans have speculated that Kendrick’s shots at an unidentified rapper on “The Heart Part 4” are directed at Drake. The OVO boss just dropped “Gyalchester” a few days earlier, on which he raps “I know I said top five, but I’m top two / And I’m not two and I got one / Thought you had one, but it’s not one, nigga, nah.”

Will more shots be fired on DAMN.? If so, will Drake finally respond directly? We’ll have to wait and see.