Had Madison Bumgarner really wanted payback for the worst beating of his big-league career, he would have had to roam the country to find all of the 2011 Twins who crushed him for eight runs in one-third of an inning.

So Bumgarner took it out on the Minnesota uniform Sunday, striking out 10 over seven innings in an 8-1 laugher that completed the Giants' second three-game sweep of an American League Central team this year.

"I sure didn't forget about that," Bumgarner said. "There wasn't a lot of talk about it, but that was something ... that was tough to forget. Yeah, it's a different team, but it doesn't matter who's there and who's not there now. It sticks with you."

Only one Twin who "pummeled" Bumgarner that night - a word that manager Bruce Bochy used - faced the left-hander Sunday. It was Joe Mauer, and Bumgarner became the fourth pitcher to strike out the 2009 American League Most Valuable Player three times in a game.

Bumgarner is one of many Giants who did not sprint out of the gate in 2014, but found his groove in May. He is 4-0 with a 2.53 ERA, 38 strikeouts and four walks in five starts this month.

He is regaining the consistency that earned him the Opening Night start and truly emerged after the Twins knocked him out in the first inning at AT&T Park on June 21, 2011.

That defeat left Bumgarner 3-9 with a 4.06 ERA. From then on, he went 10-4, 2.62 to finish the year 13-13, a proud accomplishment given the hole he had dug.

His 15th career 10-strikeout game Sunday enhanced Bumgarner's reputation as a swing-and-miss pitcher who can choke an offense.

"I think with his equipment and command, he's gained more knowledge and expertise on how to attack hitters," Bochy said.

Michael Morse, who backed his pitcher with three doubles and four RBIs, saw it when he faced Bumgarner as a Washington National.

"He's real funky," Morse said. "He throws across his body, moves the ball in and out. That makes for a long day for us hitters. He attacks. We see it every day. He goes out there and he's MadBum."