St. Louis ? Alcides Escobar hit a go-ahead RBI double just inside the right-field line in the 12th inning, and the Kansas City Royals outlasted the St. Louis Cardinals 3-2 on Wednesday night.

Escobar drove in the first run of the game with a bases-loaded sacrifice fly in the eighth.

His fly to shallow right off Seth Maness (0-2) fell just in front of Stephen Piscotty, whose homer leading off the 10th tied it at 2.

Chien-Ming Wang (5-0) worked two scoreless innings for Kansas City, which survived blown saves by Wade Davis and Joakim Soria, stranded 19 runners and used all of its bench players.

The Royals are 39-50 in the I-70 interleague series but 14-12 at 11-year-old Busch Stadium.

Whit Merrifield put Kansas City ahead in the 10th when a potential double-play grounder was booted by second baseman Matt Carpenter, and Merrifield got an RBI.

He also doubled with one out in the 12th.

Jhonny Peralta’s two-out single tied it at 1 in the ninth against Davis, the second blown save in 20 chances for the Royals closer.

Edinson Volquez worked 62/3 innings of six-hit ball in a strong bounce-back effort for Kansas City. He gave up 11 earned runs in one inning his last start.

Carlos Martinez allowed eight hits in six-plus scoreless innings for St. Louis, just 15-22 at home. The three-time defending NL Central champions were 55-26 at home last season.

Martinez has allowed two earned runs in 281/3 innings in his last four starts.

Nice D

Kendrys Morales made his first start in the outfield since 2008 a non-issue, tracking down Carpenter’s drive to the wall in right field in the third. Plus, he had three hits.

Trainer’s room

Royals: CF Lorenzo Cain (left hamstring) was placed on the 15-day DL. The team is optimistic he’ll back right after the All-Star break.

Cardinals: SS Aledmys Diaz (right eye) was the lone bench player not used. He’s missed two games but could be back soon after getting a positive checkup from the team ophthalmologist.

Up next

Royals: Chris Young (2-7, 6.54) is coming off his shortest start since Sept. 1, 2014, allowing seven runs in 21/3 innings in a loss to Houston. He’s given up a major league-high 21 homers, with at least one in all 11 starts plus he’s 0-5 with a 9.70 ERA in five road starts.

Cardinals: Mike Leake (5-5, 4.25) lasted just 31/3 innings his last start, allowing five runs at Seattle. He’s 16-7 with a 3.49 ERA in 38 June starts.