What if the Mariners traded FOR Tyler O'Neill this time?
Tyler O'Neill Stats & Scouting Report — College Baseball, MLB Draft, Prospects - Baseball America
Examining a potential Tyler O'Neill trade - Lookout Landing
Trade analysis: Mariners deal a top prospect in Tyler O'Neill but leave their biggest hole unfilled
Tyler O'Neill gets game off against Reds
Revisiting the St. Louis Cardinals trade for Tyler O'Neil
2017 Seattle Mariners Top 10 Prospects — College Baseball, MLB Draft, Prospects - Baseball America
Blaze's O'Neill signs with Mariners - Langley Advance Times
MLB Prospect Review: Tyler O'Neill, OF, Seattle Mariners - Fake Teams
Mariners Flip Tyler O'Neil for Marco Gonzales: Yawn or Yay?
One-time Mariners prospect Tyler O'Neill's trade to Cardinals was 'wakeup call' for him
Mariners Top Prospect Tyler O'Neill Gets Spring Training Invite
Canadian slugger Tyler O'Neill gets majors promotion to Cardinals
Cardinals acquire Mariners top prospect Tyler O'Neill for Marco Gonzales
One-time Mariners prospect Tyler O'Neill's trade to Cardinals was 'wakeup call' for him