But look at the other end of the spectrum, and you can see that there's a bright future for Boston's teams, with a host of up-and-coming stars succeeding before their 25th birthday.
And from N'Keal Harry and Sony Michel on the offense to J.C. Jackson and Chase Winovich on the defense, the Patriots look to have several young players who can take the reins and keep New England's run of success going for a third straight decade.
But which of those athletes has the brightest future? We asked fans to rank the under-25 set from 1-100 on what their peak video game rating would be at the peak of their careers - and when all was said and done, four players grabbed a rating of 90-plus.
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.
'20 Under 25': Ranking the top young Boston athletes for 2020 originally appeared on NBC Sports Boston