What a run it was for the dynamic duo of Rob Gronkowski and Tom Brady.

Gronk, who announced his retirement on Sunday, had been Brady's favorite target since the Patriots tight end came to New England in 2010. It goes without saying that the Brady-to-Gronk connection will go down as one of the best in NFL history, but one stat really puts their dominance in perspective.

Since 2006, no quarterback-to-receiver duo has a better passer rating than Brady-to-Gronk, which has a stunning rating of 129.6.

As if Gronkowski needed another stat to make his case as a first-ballot Hall of Famer.

With Gronk gone, Brady and the Patriots are in a tough position heading into the 2019 season. As of now, the tight end depth chart consists of Matt LaCosse, Jacob Hollister, Stephen Anderson and Ryan Izzo.

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.