Lucius Fox was not feeling well at all.

Two pitches in the Washington Nationals’ game against the San Francisco Giants at Nationals Park Sunday, Fox knew he wasn’t going to be able to play. The Nats’ third baseman tried to make his way back to the dugout from his station at the hot corner, but as he passed the mound, he threw up.

The home crowd watched and yelled in shock as Fox doubled over, heaved and barfed some more.

The grounds crew hurried to clean up the mess on the infield grass.

Fox was replaced on the field by Maikel Franco, who moved over from first base. Riley Adams was subbed in to make his first career appearance at first base and replaced Fox in the batting order.

It’s not yet known what caused Fox to feel unwell.

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