Rewind: Duffy and 'Duffy-ish' player spark big win

I base my confidence on whether I did that, got a good pitch to hit and put a good swing on it. If I do that, I’m not upset.

SAN FRANCISCO — It sounded so natural when Jake Peavy said it, and that’s what makes Matt Duffy’s season so amazing.

Peavy, talking after a 12-6 win over the Nationals, nodded toward Kelby Tomlinson’s locker and said the rookie second baseman “fits the mold” the Giants are looking for.

“He’s a Matt Duffy-ish type player,” Peavy said.

At this point, it’s hard to give a Giant a bigger compliment. Imagine that.

Duffy keeps getting better and better, and on Saturday he helped pace a lineup that continues to thrash big-name starters. The Giants have beaten Stephen Strasburg,…