Mariners send Canadian prospect O'Neill to Cardinals for Gonzales
Get to know Marco Gonzales, the Mariners' newest pitcher - Lookout Landing
Marco Gonzales - Wikipedia
St. Louis Cardinals: Cardinals trade Mike Leake to the Mariners
Seattle Mariners, St. Louis Cardinals swap Tyler O'Neill, Marco Gonzales
Tyler O'Neill - Wikipedia
Mariners get Marco Gonzales in Cardinals trade
Seattle Mariners: The Marco Gonzales, Tyler O'Neil trade 4 years later
Mariners Flip Tyler O'Neil for Marco Gonzales: Yawn or Yay?
Looking back on the Cardinals Marco Gonzales-Tyler O'Neill trade
Marco Gonzales is at home in Seattle — and comfortable as foundation of Mariners rebuild - The Athletic