We're down to the final four in our Rocktober Rumble tournament to determine the best hard rock hit of the 21st Century. Who's left and who will you vote for? Let's get into it.

Green Day's "Boulevard of Broken Dreams" won its bracket, finishing off their run with a solid victory of Foo Fighters' "Best of You." That followed wins over Thirty Seconds to Mars' "The Kill (Bury Me)" and Rise Against's "Ready to Fall." This melodic American Idiot favorite spent 14 weeks at No. 1 back in 2004 and was the Grammy winner for Record of the Year. Take a listen to the song below.

Linkin Park's "In the End" emerged from its region after a close victory over Godsmack's "I Stand Alone." That came on the heels of victories over Queens of the Stone Age's "No One Knows" and Chevelle's "The Red." "In the End" commanded the airwaves back in 2001, a Top 5 single from their breakout disc, Hybrid Theory, and it's remained one of their most popular songs, perfectly blending the vocals of Chester Bennington and Mike Shinoda. Hear the song below.

So, which song moves on to the finals of Rocktober Rumble? Will it be Green Day's "Boulevard of Broken Dreams" or Linkin Park's "In the End"? You can vote once per hour through the deadline of Friday, Oct. 28 at 10AM ET. So make those votes count.

Green Day, "Boulevard of Broken Dream"

Linkin Park, "In the End"

Loudwire
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Loudwire
Loudwire