with what top fighters from jr MW and MW, Golovkin has sparred ?

Something about 3G's sparrings :

“He’s run heavyweights out of the gym,” said Sanchez. “When he sparred Julio Cesar Chavez Jr. a month ago, he was blasting him all over the ring. And he was only using 60 percent of what he can do. Really.”

Even heavyweights prefer sparring other heavyweights rather than take Golovkin punishment.

“Nobody lasts long with Gennady,” says Sanchez, who’s trained former world champions like Terry Norris, Miguel Angel Gonzalez and Lupe Aquino to name a few. “Sometimes he takes it easy on guys, but I don’t like him to do that.”

link : https://www.google.ro/url?sa=t&rct=...gM35ZgyWSGmTC1qyg&sig2=hgWukopJV2eZwGk_rnjlRg



Another confirming article about 3G's Big Bear sparring sessions : "As for Golovkin fighting other champions and top contenders hovering around 160 pounds, DoghouseBoxing.com’s John J. Raspanti reports that Golovkin’s sparring sessions with Antonio Margarito, Alfredo "El Perro" Angulo, Saul “Canelo” Alvarez and Julio Cesar Chavez Jr. while training in Big Bear only added to his “mystique,” especially the way Golovkin allegedly “handled Chavez Jr. and humbled Alvarez.”

The word “mystique” is apt when discussing Golovkin."

link : https://www.google.ro/url?sa=t&rct=...KropGky6HI7n3Kj5w&sig2=H6LSaZ05CDFjzC5GnLO63Q