Donnie Wahlberg Instagram – Love this guy. Appreciate this guy. Respect this guy. Gonna miss this guy. Thank you Marcus Smart, aka @youngamechanger! As a fan, I will never forget your heart and your passion. As a dad, I will never forget your kindness and your class. So thankful to have been able to witness the Marcus Smart Era in Boston! See you in Memphis (we are definitely road tripping to see you) and see you for the greatest tribute video night ever, at the @tdgarden (when you return to Boston). Why am I tearing up right now?! Damn. 😔💔🔒 #ThankYouMarcus #DPOY #Legend #Celtics