Aoki had an RBI single in the 13th inning of the Royals' 7-4 victory over the Angels on Saturday, but didn't play the bottom of the frame. Jarrod Dyson started in center field on Sunday, and led off in Aoki's place, with Lorenzo Cain moving from center to right.
The X-rays on Valencia's wrist were normal, and he's day to day. He said the injury is between his pinkie finger and ring finger.
"It's definitely not going to require a DL stint," said Valencia, who was hurt in the 13th inning as well, during the at-bat in which he doubled to spark the Royals' three-run rally.
The injury came at an unfortunate time for Valencia, who became the regular third baseman when Mike Moustakas was sent to Triple-A Omaha on Thursday.
"Absolutely," Valencia said on Friday, when asked if Moustakas' option gives him a chance to re-establish himself as more than just a platoon player. "When you can play in the Major Leagues every day, it's a great opportunity. You've got to make the best of it."
Valencia said the last time he was an everyday third baseman was "the beginning of 2012, before I got sent down."
He bounced around after that, logging considerable time in the Minor Leagues, around stints with the Red Sox and Orioles, before getting traded to the Royals for outfielder David Lough.
Jimmy Paredes started at third in place of Valencia on Sunday.
Earl Bloom is a contributor to MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.