Looking back on the Cardinals Marco Gonzales-Tyler O'Neill trade

Where Seattle Mariners could look if they decide to trade for a bat - Seattle Sports

Mariners Trade Tyler O'Neill to Cardinals for Marco Gonzales - Lookout Landing

St. Louis Cardinals: Left Field is Tyler O'Neill's job to lose

Seattle Mariners, St. Louis Cardinals swap Tyler O'Neill, Marco Gonzales

Gonzaga's Marco Gonzales could be the key to vaulting Mariners' starting rotation

One-time Mariners prospect Tyler O'Neill's trade to Cardinals was 'wakeup call' for him

Maple Ridge's Tyler O'Neill reunited with Stubby Clapp after M's-Cardinals trade

Cardinals acquire Mariners top prospect Tyler O'Neill for Marco Gonzales

Seattle Mariners send top prospect Tyler O'Neill to St. Louis Cardinals for Marco Gonzales - ESPN

He left GU as a first-round pick. Four years later he's pitching for the Mariners, Sports