The Rob Gronkowski era has officially come to an end.

With an emotional post on Instagram, Gronk announced his retirement.

View this post on Instagram

It all started at 20 years old on stage at the NFL draft when my dream came true, and now here I am about to turn 30 in a few months with a decision I feel is the biggest of my life so far. I will be retiring from the game of football today. I am so grateful for the opportunity that Mr. Kraft and Coach Belichick gave to me when drafting my silliness in 2010. My life experiences over the last 9 years have been amazing both on and off the field. The people I have meet, the relationships I have built, the championships I have been apart of, I just want to thank the whole New England Patriots organization for every opportunity I have been giving and learning the great values of life that I can apply to mine. Thank you to all of Pats Nation around the world for the incredible support since I have been apart of this 1st class organization. Thank you for everyone accepting who I am and the dedication I have put into my work to be the best player I could be. But now its time to move forward and move forward with a big smile knowing that the New England Patriots Organization, Pats Nation, and all my fans will be truly a big part of my heart for rest of my life. It was truly an incredible honor to play for such a great established organization and able to come in to continue and contribute to keep building success. To all my current and past teammates, thank you for making each team every year special to be apart of. I will truly miss you guys. Cheers to all who have been part of this journey, cheers to the past for the incredible memories, and a HUGE cheers to the uncertain of whats next.

A post shared by Rob Gronkowski (@gronk) on Mar 24, 2019 at 2:53pm PDT

Gronkowski's decision to retire doesn't come as a surprise. Injuries have plagued the Patriots tight end over the course of his career, and he recently opened up about the toll those injuries have taken on him.

Gronk finishes his career with 521 receptions for 7,861 yards and 79 touchdowns. Oh, and three Super Bowl titles to boot.

Next stop, Canton.

More to come. . .

Click here to download the new MyTeams App by NBC Sports! Receive comprehensive coverage of your teams and stream the Celtics easily on your device.