On the WWE’s lauded “Road to Wrestlemania,” there’s always a series of huge developments. The Rock has now found himself back in the mix for the first time since last year’s Wrestlemania XL. And this time, “The Final Boss” is as menacing as ever. As the impetus behind John Cena’s heel turn, The Rock is forging a path to make this year’s Wrestlemania a can’t-miss event once again. I’m of the opinion that this will be remembered as the most impactful period of The Rock’s career. Pro-wrestling fans will look back fondly on the crossover star’s desire to really get his hands dirty in the product again. He’s no longer just showing up as Dwayne Johnson. He’s a part of the canon of what’s going on. So if you’re old enough to remember “The Nation of Domination,” you’re loving the hell out of this. Dwayne “The Rock” Johnson, John Cena and Travis Scott fight Cody Rhodes during WWE Elimination Chamber. Photo: Rich Freeda/WWE via Getty Images Let’s turn the clock back a bit. The year is 2003...