When Brandon Crawford was out of the lineup because of a tweaked groin, the Giants went 4-9.
Since his return, the Giants have won three of four.
"It's amazing what he does do a defense," Mike Krukow explained on KNBR 680 on Monday morning. "He completely relaxes the defense. I think that's his biggest contribution -- if he doesn't get a hit he's valuable in relaxing the defense and relaxing the pitching staff. With him there, it's dramatically different than when he's not there -- more so than any player I've seen in awhile."
Crawford is hitting just .188 with two RBI over his last four games, but his defense over the weekend was terrific.
"It's remarkable what he does when he steps out there and straps on his glove," Krukow added. "I could give you an argument at the end of the year for a guy being an MVP that perhaps has average numbers with the bat, but if he can do what he can do to a defense like Brandon Crawford does, it warrants an MVP consideration.
"I'm serious. That's how dramatic a difference it is with him out on the field. And we all watched it first hand this weekend."
For the season, Crawford is hitting .250 with two home runs and 10 RBI.
In 2015, he won the Gold Glove and was an All-Star for the first time, and he took home the Gold Glove again last year.