Per the club, the injury occurred during a workout on Wednesday. The initial hope, though, had been that the it wouldn’t require a DL stint. It’s still unclear how long Zunino will be down.
Clearly, the M’s were not anticipating opening the year without their top backstop. Zunino turned in a big 2017 season — .251/.331/.509 with 25 home runs — and is expected to be a key component of Seattle’s hopes in 2018. Hopefully this muscle injury will not prove to be a major obstacle.