Willson Contreras had an RBI single in the 10th inning to give the St. Louis Cardinals a 6-5 victory over the Kansas City Royals on Thursday in the first game of a day-night doubleheader. Yohel Pozo scored on a fielder’s choice to tie it for the Cardinals before Contreras singled to left against Carlos Estévez (2-1) to score Lars

Willson Contreras' walk-off RBI single in the 10th inning lifted the St. Louis Cardinals past the visiting Kansas City Royals 6-5 on Thursday in Game 1 of a split doubleheader.

In game one of the series, Royals' top prospect Jac Caglianone made his heavily anticipated debut, and despite him going 0-5, the Royals offense woke up, scoring 10 runs, 6 of which came in the fifth inning.

The Royals’ scheduled Wednesday evening game against the Cardinals at Busch Stadium was postponed because of inclement weather in St. Louis. The I-70 series will resume Thursday with a split doubleheader. The Royals beat the Cardinals 10-7 in Tuesday’s series opener.

The Royals (+109 underdog on the moneyline to win) are away versus the Cardinals (-129). The starting pitchers are Matthew Liberatore (3-4) for the St. Louis Cardinals, and Cole Ragans (2-3) for the Kansas City Royals.

Kansas City Royals rookie outfielder Jac Caglianone got a pair of firsts out of the way with one swing of the bat Thursday

Here's Caglianone's first career hit, a double, that brought home his first RBI. The 91.4 mph hit down the first-base line came off Cardinals starter Miles Mikolas. Through this double, Caglianone has seven career plate appearances and hasn't struck out or walked.

Jac Caglianone rounded first base as a big-leaguer for the first time on Thursday, his Kansas City Royals jersey rustling in the wind at Busch Stadium. And he kept going. A loud ovation followed as he stopped at second base with a smile on his face.