Sources - Dolphins pick up 5th-year option on QB Tua Tagovailoa - ESPN
Tua Tagovailoa contract breakdown: How much money does the Dolphins QB make as a rookie?
Miami Dolphins: Tua Tagovailoa officially signs rookie contract
Dolphins make Tua Tagovailoa contract decision
Dolphins still weighing options on Tua Tagovailoa
Dolphins to look at Tua Tagovailoa's contract after season
Miami Dolphins ink Tua Tagovailoa and Meridian's Raekwon Davis
With injuries behind him, Tua ready to help Dolphins take next step
Dolphins' Tua Tagovailoa presents big challenge for Chargers - The San Diego Union-Tribune
Former Alabama football QB Tua Tagovailoa should consider retirement