Mateo (concussion) played catch on the field at Rogers Centre in Toronto on Thursday, Matt Weyrich of The Baltimore Sun reports.
Advice: Mateo was placed on the 7-day concussion injured list Monday after his teammate, Cedric Mullins, inadvertently hit him with the bat in the back of the helmet while on the on-deck circle. It's not clear yet whether Mateo will have a chance to return when first eligible on June 10, but him being able to travel with the team and take part in some baseball activities is a good sign.
Rotowire.com
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