ST. PETERSBURG, Fla. — Tampa Bay Rays ace Blake Snell is frustrated by not being selected for the AL All-Star team, a squad that Manager Kevin Cash feels the left-hander still could end up joining.

“I’m optimistic that things are going to turn out OK for Blake,” said Cash, a member of the AL All-Star coaching staff. “A lot of us throughout baseball feel that he’s deserving. Saying that, the guys that were selected are also very deserving. It’s a product of the system a little bit.”

Snell, who is 12-4 with an AL-best 2.09 ERA, said Monday that being added now wouldn’t be the same as being an original selection.

“I feel like being an alternate, it’s not satisfying,” Snell said. “I feel like I earned it but being an alternate, it doesn’t feel the same.”

ROYALS: Kaito Yuki, a 16-year-old pitcher, is headed to the Kansas City organization instead of attending high school in Japan.

Yuki agreed to a minor league contract with a $322,500 signing bonus. He’s thought to be the first Japanese junior high school player to sign with a major league club.

METS: Third baseman Todd Frazier was placed on the 10-day disabled list with a strained muscle in his left rib cage.

It’s the second DL stint for Frazier, 32, during his first season with the struggling Mets. He had never been on the disabled list before this year.

NATIONALS: Washington activated catcher Matt Wieters from the 10-day disabled list.

He had been on the disabled list since May 11 and had surgery on a strained left hamstring. Before his injury, he hit .232 with three home runs and seven RBI in 23 games.

GIANTS: Catcher Buster Posey will miss the All-Star Game because of a lingering right hip issue that needs an injection to calm the inflammation.

The Giants had been discussing the possibility for about a month, and Posey is scheduled to have the injection after Sunday’s game.

DODGERS: The team placed right fielder Yasiel Puig on the 10-day disabled list with a right oblique sprain.