MLB Trade Deadline Recap: Seattle Mariners - MLB Daily Dish
Canadian slugger Tyler O'Neill gets majors promotion to Cardinals
Cardinals acquire Tyler O'Neill from Mariners
Marco Gonzales is at home in Seattle — and comfortable as foundation of Mariners rebuild - The Athletic
Cardinals 2020 breakout candidate: Tyler O'Neill - The Athletic
Mariners sign pitcher Marco Gonzales to four-year extension
Mariners acquire lefty Marco Gonzales from Cardinals for outfielder Tyler O'Neill
Seattle Mariners Offseason Primer: Who could be on their radar? - Seattle Sports
Marco Gonzales primed to help Mariners in wild-card hunt
5 trade destinations if the St. Louis Cardinals decide to trade Tyler O'Neill
3 trade fits for Cardinals' Tyler O' Neill
Who is Tyler O'Neill? - Viva El Birdos
Slugger, know thyself: O'Neill's strong start began by reconnecting with 'player I am, waiting to break out