Semien runs down Marte's popup
Mariners @ AthleticsSeptember 9, 2016 | 00:00:12
Marcus Semien races towards left field to track down Ketel Marte's shallow popup and makes the catch in the top of the 9th inning
Marcus Semien races towards left field to track down Ketel Marte's shallow popup and makes the catch in the top of the 9th inning