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Jay-Z is up for eight awards: Album of the Year, Record of the Year, Song of the Year, Best Rap Performance, Best Rap/Sung Performance, Best Rap Song, Best Rap Album and Best Music Video.
Beyond the night's headlining names, there's the distinct chance that history will be made at this year's awards.
The two stars won three awards each during the pre-telecast on Sunday.
The Rolling Stones picked up the third Grammy of their career - for best traditional blues album for "Blue & Lonesome", while Ed Sheeran won best pop vocal album. But the danger of vote-splitting between Jay-Z and Lamar means that the Grammy may go to one of the category's more pop-oriented artists.
JAY-Z ("4:44") and Mars ("That's What I Like") are also both nominated for another major category, song of the year, as well. Emmy and Golden Globe victor Childish Gambino picked up best traditional R&B performance. There was the Macklemore incident of 2014, in which the Seattle rapper took home best rap album for The Heist over Lamar's Good Kid, m.A.A.d City, then infamously texted Lamar to apologize.
Mars swept up awards for best R&B performance, best R&B song and best R&B album.More news: Moreno returns but Sturridge is left out against West Brom
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Will win: Logic, 1-800-273-8255 feat. Of all the nominees this year, the song that best suits the category's recent trajectory is Logic's 1-800-273-8255, with a suicide-awareness message that voters will likely perceive as meaningful.
Who will win: This is a very hard category to pin down. They'll have Bruno Mars joining the competition in the following categories: Record of the Year, Album of the Year, and Song of the Year [Jay-Z competing].
Should win: Luis Fonsi and Daddy Yankee, Despacito feat.
Justin Bieber, Pharrell Williams, Daddy Yankee and Luis Fonsi are among the artists with 3 Grammy nominations this year. "Humble" may have a shot, but a pure rap song has never won Record of the Year. 24K Magic is similarly crowd pleasing.
We don't expect the kind of domination Adele brought to last year's ceremony. That may tip the scales in Despacito's favor, which was America's No. 1 single for much of 2017.
And yet, the top categories at this year's Grammy Awards have a decidedly different feel, and Adele is unquestionably the reason. And if so, is this Kendrick Lamar's year?
Other performers include Fonsi and Yankee, Mars with Cardi B, Lady Gaga, Pink, Gambino, Emmylou Harris and Chris Stapleton, Elton John and Miley Cyrus, Sam Smith, Little Big Town, Rihanna with DJ Khaled and Bryson Tiller, Sting and SZA, which is the most nominated female act with five.