Corey Seager got a belated 21st birthday gift – a ticket to Oklahoma City.

The Dodgers’ blue chip shortstop prospect has been promoted to Triple-A after tearing up Double-A pitching for the first three weeks of the season. Seager, who turned 21 on Monday, will report to the Oklahoma City Dodgers on Friday.

The No. 5-ranked prospect by Baseball America leading into the 2015 season, Seager opened with Double-A Tulsa and hit .375 with a 1.082 OPS and 15 RBI in 20 games. He was the Texas League Player of the Week after the first week of the season and finished his stay with a bang, hitting his fifth home run of the season in his final game for the Tulsa Drillers Thursday night.

This will be the first taste of Triple-A for Seager who also got his first taste of a big-league training camp when he opened spring training as a non-roster invitee. Seager was 6 for 18 in preseason exhibition games.

The 6-foot-4, 215-pound Seager made his fourth start at third base for Tulsa on Thursday night. Though Dodgers president of baseball operations Andrew Friedman said he still believes Seager’s major-league future will be at shortstop, the Dodgers had Seager play third base once a week in Tulsa to make that an option as well if a need arises at the major-league level.

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