WATCH: Triston Casas' clutch homer puts Team USA ahead vs. Japan

Triston Casas continues to rake for Team USA.

The Boston Red Sox prospect now has home runs in back-to-back games at the Tokyo 2020 Olympics, as Casas blasted a three-run shot Monday morning in USA Baseball's matchup with Japan.

The score was tied in the fifth inning at Yokohama Stadium when Casas launched an opposite-field homer that gave Team USA a 6-3 lead.

https://twitter.com/USABaseball/status/1422164234641854464

Hitting fourth and playing first base Monday, Casas had already walked and scored a run earlier in the game. He also belted a two-run homer in Team USA's game against South Korea on Saturday and has been one of the team's most prolific power hitters in Tokyo.

That's an exciting development for Red Sox fans, who have watched 26-year-old Bobby Dalbec struggle at first base this season. The 21-year-old Casas is the No. 1 prospect in Boston's system and is slashing .271/.354/.777 in Double-A Portland this season with six home runs and 30 RBIs through 46 games.

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Trade deadline acquisition Kyle Schwarber potentially could play first base for Boston when he returns from a hamstring injury, so it's unclear whether Casas would join the major-league club this season. But the young prospect is flashing great potential, and his impressive effort on the international stage to date should only help his chances of moving through the Red Sox' organizational ranks.

UPDATE (10 a.m. ET): Casas' efforts were for naught, as Japan rallied to win 7-6 in 10 innings to advance to the semifinals. Casas went 2-for-4 with a home run, a double, a walk, three RBIs and two runs scored in the loss.

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