Mateo, 25, was once a highly regarded prospect in the New York Yankees farm system. He was traded to Oakland along with Dustin Fowler and James Kaprielian at the 2017 non-waiver trade deadline in the deal that brought Sonny Gray to New York.
Since then, Mateo’s career has been up and down. He did notably finish 2019 with a career best 19 homers at Triple A, but a call to MLB has yet to come.
Opportunities in San Diego will be hard to come by thanks to the Padres loaded infield. The Padres have Manny Machado, Fernando Tatis Jr., Jurickson Profar, Eric Hosmer and Will Myers as options. Mateo should improve the team’s depth, which is a critical aspect going into this 60-game season. He could also be viewed as a development player with potential to pay off down the road.
Now that MLB’s rosters are unfrozen, expect several more trades to come before opening day on July 23.