Bryce Harper of the Washington Nationals has signed the largest endorsement deal in Major League Baseball history.

The Nationals’ 2010 first overall pick noted he signed a ten-year deal with sportswear giant Under Armour. Though the company would not release the details of the deal, some speculate that Harper will be netting well over $1 million annually from the sportswear company.

Harper announced his deal with a post to his Instagram account saying, “No other company I would want to be with! Can’t wait to show the world what is coming..lets have some fun!”

No other company I would want to be with! Can’t wait to show the world what is coming..lets have some fun! #Family #TeamUA

A photo posted by Bryce Harper (@bharper3407) on May 3, 2016 at 8:10am PDT

In a press release from the company, the right fielder said, “Under Armour has been one of my biggest advocates since I began my professional journey, and I can’t wait to share what’s next with the fans.”

“Bryce embodies our brand’s founding philosophy of ‘Aggressive, Young and Fearless,’ and we look forward to continuing to aid in his upward progression in the sport of baseball,” Under Armour vice president Peter Murray said in a statement.

In July the company will release Harper’s signature cleat, the “Harper One,” and has introduced a line of casual clothing featuring Harper’s own logo.

Harper finished the 2015 season with a .330 batting average, 42 home runs, and 99 RBIs. This year the National League’s Most Valuable Player is batting .271 and has hit nine home runs and knocked in 24 RBIs so far.

Follow Warner Todd Huston on Twitter @warnerthuston or email the author at igcolonel@hotmail.com