Below are just a few of the San Francisco 49ers players' reactions on Twitter and Instagram to the Justin Smith retirement announcement.
QB Colin Kaepernick
S Eric Reid
#FarewellCowboy it's been awesome being able to play with this guy— Eric Reid (@E_Reid35) May 18, 2015
NT Ian Williams
Learned so much from these dudes that I couldn't explain it in words. I came in almost 5 years ago now. I was blessed to learn and watch one of the best defenses to ever play this game... The type of players I had the privilege to watch @patricklwillis @navorro_bowman @aldonsmith #ahmadbrooks #parysharelson #dashongoldson @dontehitner31 #carlosrogers @illest972 #rickyjean #justinsmith @raymcd91 #issacsopoaga I saw what greatness really was from this group of guys... And we had some dogs on offense too... With JSmith retiring today I wish him and his family the best in the next chapter of their lives. But I know he can't/won't stay far from this team and this fan base. All the best to @patricklwillis #chrisborland and #justinsmith 👌👌👌👌 #respect
And of course Williams' response to a fan asking, "some 'Niners fans' panicking after the JSmiths announcement...what do u have to say?"
And of course there are former 49ers teammates that also went to social media to share their thoughts.
LB Dan Skuta, Jacksonville Jaguars
LB Darius Fleming, New England Patriots
You can't find a harder working guy who lead by example on and off the field. Definition of how this game should be played. Farewell Cowboy— Darius Fleming (@dfleming58) May 18, 2015
OL Jason Slowey
Dude was UNBLOCKABLE. Taught me a lot! https://t.co/fmgOHdXKKO— Jason Slowey (@JasonSlowey) May 19, 2015
RB Anthony Dixon, Buffalo Bills