Posey went 4-for-5 Saturday with three RBIs in a 10-5 victory over Washington. That means he's banged out 19 hits -- with six homers -- and knocked in 13 runs during the last 10 games entering Sunday. Elias said that no other National League rookie has ever had that many hits, homers and RBIs during a 10-game stretch.
It's happened a bunch of times in the American League, but Posey now has set the standard for NL rookies. He was batting .351 with seven homers and 23 RBIs since his May 29 callup.
Posey walked in his first at-bat in Sunday's game.
"I try not to have too many expectations, whether it's for a year, or for a week or for a day and just try to go out and play as hard as I can and let the results take care of themselves," Posey said.
San Francisco manager Bruce Bochy has been impressed with Posey at the plate.
Bochy also showed some real faith in Posey during Saturday's game, starting two baserunners three straight times while the catcher had two strikes on him -- and Posey eventually got a single to right that gave San Francisco the lead for good.
"He's got great discipline at the plate," Bochy said. "It's nice to have a hitter like that [where] you're confident he's going to put the ball in play."