IN PHOTOS: Fans celebrate at Percival Molson Stadium and on Twitter

200 season-ticket holders were on hand to welcome AC on the field at halftime! #MerciAnthony pic.twitter.com/oA1CAVX1LT

— #MerciAnthony (@MTLAlouettes) October 13, 2014

#MerciAnthony – a hero and role model to all. Wonderful career and life! Glad you`re an Alouette for life!

— Barb (@barb_hill) October 13, 2014

While graduating high school in 2002-2003, the @MTLAlouettes won the Grey Cup on November 24, 2002! #MerciAnthony pic.twitter.com/7tXm2m74Ey

— Victor Esposito (@victoresposito) October 13, 2014

#merciAnthony What a glorious celebration of a truly amazing man, grateful to be part of #CFL history. pic.twitter.com/VKXJkbtq17

— Lori (@mtlalsgirl) October 13, 2014

I was lucky to have had the best seat in the house for about 7500 of AC's passing yards #mercianthony #cfl pic.twitter.com/vcY563oebX

— Glen Johnson (@G_D_Johnson) October 13, 2014

I'm a die hard Ti Cats fan but, seeing Mike Pringle and Anthony Cavillo brings back memories of some awesome football. #CFL #MerciAnthony

— Jeff Clark (@JeffClark1969) October 13, 2014

Sky is the limit! @mtlalouettes #merciAnthony pic.twitter.com/YZ9IiRqeAR

— Jean-François L. (@sangquicoule) October 13, 2014

I can say I grew up watching a legend, truely an inspiration for the young men of my generation #MerciAnthony

— BrettZee (@BrettZeeOTB) October 13, 2014

Retiring Calvillo's jersey in Mtl. A true legend of our game #mercianthony #cfl pic.twitter.com/vRfKiDnxnR

— Glen Johnson (@G_D_Johnson) October 13, 2014

Congrats Calvillo! An admired athlete who is, above all, an admired person. #MerciAnthony #Alouettes… http://t.co/drkoldIBYH

— John Michael Baynton (@_sloopjohnb_) October 13, 2014

Congrats to the great Anthony Calvillo! U were a pleasure to watch & although u played for the enemy, I always respected u! #merciAnthony

— Christie Buono (@ChristieBuono) October 13, 2014

#MerciAnthony Hands down the best QB to ever play the game. When we are all gone people will still whisper your legend. Happy retirement!

— ARGHOST! (@RedDoubleBlue) October 13, 2014

#MerciAnthony Congrats on a great career & thank you for the memories! pic.twitter.com/ybmlZwwX3R

— Impact de Montréal (@impactmontreal) October 13, 2014

Hey, @acalvillo13 -Congratulations on your jersey retirement! You're truly the best, and you've earned it! Mazel Tov! #MerciAnthony @CFL

— Matt Lalor (@MattLalor) October 13, 2014

Today we wrap up Thanksgiving by saying thank you to the best, we have been blessed #MerciAnthony @MTLAlouettes #CFL pic.twitter.com/BaYQzgLdMH

— Lori (@mtlalsgirl) October 13, 2014