St. Louis Cardinals send Tyler O'Neill down
Mariners Acquire Marco Gonzales From Cardinals For Tyler O'Neill - MLB Trade Rumors
Mariners acquire lefty Marco Gonzales from Cardinals for outfielder Tyler O'Neill
Marco Gonzales earns with for Tacoma Rainiers in first start with Mariners organization
Analysis: A look at remaining potenial offseason targets for Mariners
Detroit Tigers: Five Potential Spencer Turnbull Trades
Seattle Mariners, St. Louis Cardinals swap Tyler O'Neill, Marco Gonzales
Cardinals 2020 breakout candidate: Tyler O'Neill - The Athletic
Trade analysis: Mariners deal a top prospect in Tyler O'Neill but leave their biggest hole unfilled