Konnor Griffin will join the Pittsburgh Pirates for Friday’s home opener against the Baltimore Orioles. The betting market has big expectations for MLB’s top prospect.

Ahead of his highly anticipated debut, Griffin emerged as the favorite to win this year’s National League Rookie of the Year award on DraftKings Sportsbook. The 19-year-old’s odds jumped to the top of a loaded class at +240.

That’s an especially notable endorsement considering the competition. Griffin displaced Sal Stewart (+350) as the front-runner despite the Cincinnati Reds first baseman reaching base 16 times and tallying five extra-base hits in six games, including a standout series against Pittsburgh.

Griffin also leaped ahead of St. Louis Cardinals shortstop JJ Wetherholt (+450) and starting pitchers Nolan McLean (+600) and Andrew Painter (+1100). Pirates hurler Bubba Chandler trails them at +2000 after working 4 1/3 hitless innings in Tuesday’s win over the Reds.

If he takes the field on Friday, Griffin will become the first teenager this century to play within his MLB team’s first seven regular-season games. The shortstop hit .171 in spring training, but oddsmakers don’t appear too worried about early growing pains.

After not making the Opening Day roster, Griffin quickly compelled the Pirates to reconsider by going 7-for-16 with five walks, three doubles and three stolen bases at Triple-A Indianapolis. That’s after soaring up the organization’s minor league ladder by batting .333 with 21 home runs and 65 steals across three levels last year.

The Pirates will officially promote Griffin before Friday’s game against the Orioles, which starts at 4:12 p.m. ET.

More MLB: Paul Skenes ‘Fired Up’ For Konnor Griffin’s Historic MLB Debut