"His passion for the game is truly unbelievable, and his knowledge and understanding of what he's seeing, what the opponents are trying to do to him, the pitching, is also unbelievable," Dodgers vice president of player development De Jon Watson told MLB.com. "It's very refreshing to see."

Seager, who is considered the Dodgers' fourth-best prospect by MLB.com, hit .309 with a .520 slugging percentage in 46 games in rookie ball last season. Seager continues to work at shortstop, though some scouts believe he will eventually develop into a third baseman like his older brother Kyle Seager, who plays for the Mariners.

"We think it's a very big piece for us," Watson said. "He had some help, obviously from his brother playing at the major-league level. I'm sure they communicate often. We also love the kid's make-up and his work ethic. He has an unbelievable passion for the game."