If there was one good thing to come from Slayer's retirement, it was the chance that Metallica, Slayer, Megadeth and Anthrax would get together again to play some more Big 4 shows. There's bad news for thrashers around the globe as Metallica's Rob Trujillo hasn't heard any chatter about more of these legendary gigs.

"To be honest, I haven't heard any conversations about the Big 4," the bassist told Australia's The Music (audio below) when asked if the Big 4 concept would end with Slayer's retirement.

Continuing, Trujillo offered, "We love Slayer — I love Slayer; they're one of my favorite bands. And Anthrax [are] amazing and that was great what we did a few years back. But I haven't heard any conversations about that. I mean, obviously, we're still in the middle of our tour. And I'm not sure what [the other bands] are doing. I know, yeah, Slayer [are] definitely on their final tour. I'm not even sure Slayer's up for [Big 4 shows] or what."

With Slayer on their farewell tour, Metallica still touring behind Hardwired... To Self-Destruct and both Anthrax and Megadeth working on new records, it's a busy time for all of the groups. "It's a weird question, because it hasn't been talked about or discussed, because everybody is kind of in the middle of their stuff right now," added Trujillo, who also said he's uncertain on how to answer the question of more Big 4 concerts.

Reflecting on the shows that did happen, the Metallica member commented, "But I can say it was an incredible experience and we all had a blast. And it was something that no one thought could really be done, and then it happened. And it was a beautiful thing. But, you know, I think at some point, everybody kind of moves on and they get wrapped up in their stuff, and that's kind of where everybody's at right now."

In December, Megadeth's Dave Mustaine insisted that at least one more Big 4 show should happen before Slayer are done for good.

Top 50 Thrash Albums of All Time