Mariners sign Kyle Seager to seven-year, $100 million extension

The Mariners have agreed to a seven-year, $100 million extension with third baseman Kyle Seager, an industry source has confirmed. The deal, which was first reported by Jeff Passan of Yahoo! Sports, also includes a club option for 2022 that could be worth up to $20 million due to performance escalators.

Seager, 27, has been consistent for the Mariners over his first four seasons, hitting .262/.328/.429 with 70 home runs and 264 RBI in 527 games. He had a breakout season in 2014, hitting .268/.334/.454 with 25 home runs and 96 RBI while being named to his first career All-Star team and receiving a Gold Glove award for his above average defense.

The deal expires at the end of Seager's age-33 season, locking him in with the Mariners through the prime of his career and providing him an opportunity to hit free agency before the age of 35. The former third-rounder out of UNC will play alongside Robinson Cano for the duration of the deal, with Brad Miller and Chris Taylor likely to man the shortstop position for the foreseeable future.

With Seager, Cano and ace Felix Hernandez locked up for a combined $515 million, the Mariners have secured a trio of stars who they hope will represent the core of their team for many years to come. Next, the team is likely to add an outfield bat via trade, with additional starting pitching always lurking as a possibility.